.NET 4.7 shipped earlier this year and includes Web Forms support. Looking at the support lifecycle page, I can see how the order of answers calling out .NET 4.5.2 at the top might be confusing. The last answer on that page (
What is the Lifecycle Policy for the different versions of the .NET Framework?) is the one I think you want - it indicates that .NET Framework 4.7 ships with Windows Server 2016 and Windows 10 CU (1703), which pushes you out to 2022 (minimum, every release keeps resetting the clock) for Mainstream Support.
[disclaimer: Microsoft employee, .NET Foundation staff]
Comments
.NET 4.7 shipped earlier this year and includes Web Forms support. Looking at the support lifecycle page, I can see how the order of answers calling out .NET 4.5.2 at the top might be confusing. The last answer on that page ( What is the Lifecycle Policy for the different versions of the .NET Framework?) is the one I think you want - it indicates that .NET Framework 4.7 ships with Windows Server 2016 and Windows 10 CU (1703), which pushes you out to 2022 (minimum, every release keeps resetting the clock) for Mainstream Support.
[disclaimer: Microsoft employee, .NET Foundation staff]