A new stability release firmware for the 5800 XM, still not available from OTA update and also Nokia Software Updater but already available in Nokia Care, this is more a stability release than a new firmware with new features, so there's no advanced home screen or kinetic scrolling

According to some users that have updated their 5800 :

- Battery life increased a lot
- Sound quality and sound volume increased
- Faster phone and much more responsive
- More free ram
- Not Hackable
- Email in home screen

Source : Forum.Nokia.com