After many years of work, RyuJIT for x64 has now been released! Thanks to many of you trying it out over the course of the last couple years via our CTP releases, and giving us valuable feedback.
You can read all about the .NET Framework 4.6 release (which includes RyuJIT) here: http://blogs.msdn.com/b/dotnet/archive/2015/07/20/announcing-net-framework-4-6.aspx.
You can see Soma's blog post on the Visual Studio 2015 and .NET Framework 4.6 releases here: http://blogs.msdn.com/b/somasegar/archive/2015/07/20/visual-studio-2015-and-net-4-6-available-for-download.aspx.
Enjoy these releases, and keep the feedback coming!