New preview release of SSDT November 2015 Preview in Visual Studio now supports .rptproj extensions.
ETA: SQL Server Data Tools are now GA (Generally available) as of 2016-06-01
New preview release of SSDT November 2015 Preview in Visual Studio now supports .rptproj extensions.
ETA: SQL Server Data Tools are now GA (Generally available) as of 2016-06-01