There’s a number of changes that you can expect:

Loads of new games and apps in the Ovi Store

Gaming fans can now get their hands on all sorts of new titles including Jurassic 3D Rollercoaster, Zen-bound, Angry Birds (level pack), Sygic, Kroll, Weatherbug and GoGadget. Bear in mind that these games won’t show up in the Ovi Store until you have upgraded to PR 1.2.

It’s one for the socialites among you

Facebook IM Chat is now bundled in, and the updated email service allows you to accept or decline event invitations right from your inbox. And what do you think of video calling, allowing users face-to-face chatting anywhere.

A freshened Ovi Maps interface

This updated UI should make it easier for you to find your way around, and there’s also a change to the menu system UI, with the first level now customisable…
On top of all that, your N900 can now browse the web in portrait mode and make video calls.

Via : http://blogs.nokia.com/nseries/