After the update for the E90 a few days ago the very popular Nseries-phone N73 just got another update. The new firmware is v4.0812.4.x and you can update your N73 via the Nokia Software Updater.
The changes are:
- Support for mobile TV (using the SU-33W)
- Support for Express Mail clients
- Updates and improvements to Nokia Maps
- Improved JAVA-support
Source: All About Symbian