Recently Microsoft released RC for VS2015 and TFS 2015, Refer the links below for more details:
Download Visual Studio and Team Foundation Server 2015 RC
VM of Visual Studio 2015 RC in Azure
Visual Studio 2015 RC Release notes
TFS 2015 RC Release notes
Visual Studio 2015 RC KB Article
TFS 2015 RC KB Article
Download Visual Studio and Team Foundation Server 2015 RC
VM of Visual Studio 2015 RC in Azure
Visual Studio 2015 RC Release notes
TFS 2015 RC Release notes
Visual Studio 2015 RC KB Article
TFS 2015 RC KB Article