Mono 3.8.0 was released last week. It comes with several performance and scalability improvements across the runtime, as well as finishes the Windows port.
RyuJIT, Microsoft's project to produce an improved Just-in-Time compiler for .NET, has taken a big step forward on the compatibility front by adding support for Windows 7 and Windows Server 2008. Now developers on these platforms can test RyuJIT with their code.
Azul Systems announces the release of ReadyNow! in the latest version of Azul's Zing runtime for Java. Includes a series of algorithms designed to obviate the need for "warming-up" the Java Virtual Machine.
The next generation .NET compiler from Microsoft, codename RyuJIT, has just had a second preview version release. While still very much a beta, the initial results are impressive when compared to both the first preview and the current 64-bit JIT compiler used by NET today.
Recognizing the shift from 64-bit applications as server-specific to their broadened use on most platforms, Microsoft has announced the RyuJIT project, which is developing a vastly improved just-in-time compiler for .NET applications.
Facebook has announced using HHVM, a HipHop VM with JIT compilation, in production, a solution that has unified their development and deployment environments, providing significant performance gains for developers.