I upgraded the software in my E72 from 21.024 to 31.023 today. Though there were warnings in Nokia forums about problems with the upgrade, I decided to go ahead with it. My ‘courage’ won. I have none of the problems faced by those in the forum.
The upgrade installs a few apps like the long-awaited Internet Radio (inside the radio app), a connectivity app, a Bloomberg app and a separate Ovi sync app.
The nice thing about upgrading the firmware in E72 compared E71 is that all the apps you have installed in your phone remain. In the E71, I had to install all the apps all over again after each firmware upgrade.