Latest update for WCF RIA Services v 1.0 includes support for Windows 8.1 and VS2010, 2012, 2013.

Version: 4.1.61829.0            |        Date Published:  11/5/2013

Little about WCF RIA Services

    “ WCF RIA Services simplifies the traditional n-tier application pattern by bringing together the ASP.NET and Silverlight platforms. RIA Services provides a pattern to write application logic that runs on the mid-tier and controls access to data for queries, changes and custom operations. It also provides end-to-end support for common tasks such as data validation, authentication and roles by integrating with Silverlight components on the client and ASP.NET on the mid-tier. “
    [Quote – Microsoft]

Download WCF RIA Services v1.0 SP2