Nokia keeps updating its phones. 
Unlike the previous N93‘s update which solved some major issues, the results of this one are not that visible to the end user. The recap:
- Faster initialization/startup time
- Optical zoom noise reduction algorithm updated
- UI improvements
- Apps: Search, WLAN Wizard added; QuickOffice updated
- Cover UI to not lit back-light as music clip change to save battery power
Full list available on Symbian-Freak.