On 12 December 2012 (12-12-12), CodeWeavers released CrossOver 12.0 for running Windows software on Linux and Apple OS X.
CrossOver 12.0 for Linux and Mac OS X systems brings many new features, improved Windows application support, and bug-fixes for this paid software that is built atop Wine. The Wine release being used by CrossOver 12.0 is based upon Wine 1.5.15. CrossOver 12.0 is also the first release from CodeWeavers that bundles Wine-Mono
for Microsoft .NET support using Mono.
Among the newly-supported Windows software for Linux/Mac systems with CrossOver 12 is support for Quicken 2013, Microsoft .NET 4.0, Guild Wars 2, and World of Tanks. With CrossOver 12 are also continued improvements for handling Microsoft Office.
The Linux features to this release include a single desktop menu item, better support for window transparency with compositing window managers, and printer fixes. On the Apple Mac OS X version of CrossOver 12 is a new experimental Mac graphics driver. This new graphics driver for CrossOver/Wine is no longer dependent upon the X11 Window System for interaction but better integrates with the native windowing system to OS X.
More details on CodeWeavers CrossOver 12.0 is available from the press release
and more detailed release announcement