Being based on Wine 2.2, Wine Staging 2.2 inherits all of its new functionality, including the ability to set the default Windows version to Windows 7 for newly created prefixes, the implementation of additional Shader Model 5 instructions, initial support for double-buffered theme painting, as well as the new Direct3D command stream improvements. However, Wine Staging 2.2 comes with its own set of improvements, and promises to add various speed optimizations to the CSMT feature making many DirectX 10 and DirectX 11 Windows games work much better under Wine, as well as to improve the Wbemprox component and fix a bunch of issues that have been reported by users since version 2.1.