Some noticeable stuff after 1.1 update: (not really easter egss..)
1. Portrait mode for MicroB browser. (still in beta stage)
2. Games run faster / smoother. Nearly all games. (eg. Labyrinth Lite)
3. Ovi Maps interface is better and follows you as you move.
4. Menus are rearranged. Icons in 'More..' are sorted alphabetically.
5. Front camera quality is improved although it's still bad. =P
6. Video recording is much better with far less frame drops and stutter.