Provide .Net 4.5 Framework support for SharePoint 15/2013
Provide .Net 4.5 Framework support for SharePoint 15/2013 so that developers can leverage the new built-in Windows Iden***y Foundation capabilities (WIF) that ships with the .Net 4.5 Base Cl*** Library. This will significantly simplify Claims-based development in SharePoint 15/2013 vs. continuing to use .Net 4.0 with limited support for WIF.
Thanks for your feedback! This does nothing with Visual Studio, but we’ve forwarded the feedback to SharePoin platform team.
Hossein Aarabi commented
SP 2013 RTM already supports .NET Framework 4.5.