Wine v1.7.21 is released. Wine is a project to allow a PC running a Unix-like operating system and the X Window System to run x86 programs for Microsoft Windows. Alternately, those wishing to port a Windows application to a Unix-like system can compile it against the Wine libraries.

Wine v1.7.21 Changelog:
- Support for critical sections in the C runtime.
- Unicode data updated to Unicode 7.0.
- Support for interlaced PNG encoding.
- Initial stub for the Packager library.
- Various bug fixes.

Download: Wine v1.7.21
Source: Here