There are lot of interesting features pack the new operating systems, with lots of improvements and addition from the previous version. Amongst notable is the support for HDMI output. The S^3 also features 4G network support, one-click WLAN connectivity, various usability enhancements, and a new home screen with support for gestures and multiple pages of widgets. I think 2010 would really be a smartphones year.
In addition, the new Symbian S^3 OS sports an integrated radio music store, improved memory management with Writable Data Paging and 2D/3D graphics architecture supporting OpenGL ES.