Wine 1.5.31 isn't too exciting for Linux users with most of the noted work being on the Mac OS X support. However, Wine 1.5.31 does update its built-in Gecko rendering engine to what's found in Mozilla Firefox 21.
- New version of the Gecko engine based on Firefox 21.
- Joystick force feedback support on Mac OS X.
- Window management fixes in the Mac driver.
- Various bug fixes.
More details on the Wine 1.5.31 along with the lengthy list of fixed bugs can be found at WineHQ.org.