diff --git a/build/GlobalAssemblyInfo.cs b/build/GlobalAssemblyInfo.cs
index 6d3d1d0..4c8dcfb 100644
--- a/build/GlobalAssemblyInfo.cs
+++ b/build/GlobalAssemblyInfo.cs
@@ -18,5 +18,5 @@ using System.Runtime.InteropServices;
 [assembly: Guid("e77112b7-b6ba-43a8-b21f-dd79a7a47a2f")]
 
 [assembly: AssemblyVersion("2.1.0")]
-[assembly: AssemblyFileVersion("2.1.0.7")]
-[assembly: AssemblyInformationalVersion("2.1.0-preview1")]
\ No newline at end of file
+[assembly: AssemblyFileVersion("2.1.0.0")]
+[assembly: AssemblyInformationalVersion("2.1.0-preview2")]
\ No newline at end of file
diff --git a/src/EFCore.Jet/EFCore.Jet.csproj b/src/EFCore.Jet/EFCore.Jet.csproj
index 55218ec..b031621 100644
--- a/src/EFCore.Jet/EFCore.Jet.csproj
+++ b/src/EFCore.Jet/EFCore.Jet.csproj
@@ -30,6 +30,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -50,6 +51,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.EntityFrameworkCore, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
diff --git a/src/System.Data.Jet/System.Data.Jet.csproj b/src/System.Data.Jet/System.Data.Jet.csproj
index 374ee7d..10bd780 100644
--- a/src/System.Data.Jet/System.Data.Jet.csproj
+++ b/src/System.Data.Jet/System.Data.Jet.csproj
@@ -21,6 +21,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -29,6 +30,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -38,6 +40,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -47,6 +50,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup>
     <SignAssembly>true</SignAssembly>
diff --git a/test/EFCore.Jet.Design.FunctionalTest/EFCore.Jet.Design.FunctionalTests.csproj b/test/EFCore.Jet.Design.FunctionalTest/EFCore.Jet.Design.FunctionalTests.csproj
index 57fcb72..93fc263 100644
--- a/test/EFCore.Jet.Design.FunctionalTest/EFCore.Jet.Design.FunctionalTests.csproj
+++ b/test/EFCore.Jet.Design.FunctionalTest/EFCore.Jet.Design.FunctionalTests.csproj
@@ -25,6 +25,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -33,6 +34,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -42,6 +44,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -51,6 +54,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="..\EFCore.Jet.FunctionalTests\TestUtilities\JetTestStore.cs">
diff --git a/test/EFCore.Jet.FunctionalTests/EFCore.Jet.FunctionalTests.csproj b/test/EFCore.Jet.FunctionalTests/EFCore.Jet.FunctionalTests.csproj
index 8eea305..5cf3cd5 100644
--- a/test/EFCore.Jet.FunctionalTests/EFCore.Jet.FunctionalTests.csproj
+++ b/test/EFCore.Jet.FunctionalTests/EFCore.Jet.FunctionalTests.csproj
@@ -24,6 +24,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -32,6 +33,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -42,6 +44,7 @@
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
     <WarningsAsErrors>CS0108;CS0114</WarningsAsErrors>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -51,6 +54,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Castle.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL">
diff --git a/test/EFCore.Jet.Integration.Test/EFCore.Jet.Integration.Test.csproj b/test/EFCore.Jet.Integration.Test/EFCore.Jet.Integration.Test.csproj
index f3056a6..5c3bf5c 100644
--- a/test/EFCore.Jet.Integration.Test/EFCore.Jet.Integration.Test.csproj
+++ b/test/EFCore.Jet.Integration.Test/EFCore.Jet.Integration.Test.csproj
@@ -31,6 +31,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
     <PlatformTarget>x86</PlatformTarget>
@@ -41,6 +42,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>
@@ -58,6 +60,7 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
     <OutputPath>bin\Release\</OutputPath>
@@ -75,6 +78,7 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="EntityFrameworkCore.SqlServerCompact40, Version=2.1.0.0, Culture=neutral, PublicKeyToken=9af395b34ac99006, processorArchitecture=MSIL">
diff --git a/test/EFCore.Jet.Tests/EFCore.Jet.Tests.csproj b/test/EFCore.Jet.Tests/EFCore.Jet.Tests.csproj
index 7329349..7187e44 100644
--- a/test/EFCore.Jet.Tests/EFCore.Jet.Tests.csproj
+++ b/test/EFCore.Jet.Tests/EFCore.Jet.Tests.csproj
@@ -33,6 +33,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -52,6 +53,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Castle.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL">
diff --git a/test/System.Data.Jet.PerformanceTest/System.Data.Jet.PerformanceTest.csproj b/test/System.Data.Jet.PerformanceTest/System.Data.Jet.PerformanceTest.csproj
index 47bdd7e..9a1390b 100644
--- a/test/System.Data.Jet.PerformanceTest/System.Data.Jet.PerformanceTest.csproj
+++ b/test/System.Data.Jet.PerformanceTest/System.Data.Jet.PerformanceTest.csproj
@@ -28,6 +28,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -36,6 +37,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -45,6 +47,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -54,6 +57,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.VisualStudio.TestPlatform.TestFramework, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
diff --git a/test/System.Data.Jet.Test/System.Data.Jet.Test.csproj b/test/System.Data.Jet.Test/System.Data.Jet.Test.csproj
index cedbe0d..0b323b1 100644
--- a/test/System.Data.Jet.Test/System.Data.Jet.Test.csproj
+++ b/test/System.Data.Jet.Test/System.Data.Jet.Test.csproj
@@ -28,6 +28,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -36,6 +37,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -45,6 +47,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -54,6 +57,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.VisualStudio.TestPlatform.TestFramework, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">