The Symbian Foundation unveiled the Symbian^3 (S^3) platform on Monday at the Mobile World Congress (MWC) in Barcelona. It will include significant usability and interface advances, HDMI support, multi-touch gesture, multi-pages homescreen, and more. The first devices using the OS are expected to ship Q3 this year. Nokia showed a preview of their vision of S^3 in a video.

Judging from the video, I already like the multitasking thumbnail previews, but I’m a little concerned about the widgets implementation. The widgets all seem to be locked to one size! This is just a preview though, so I can’t complain too much. I’d love to hear your initial thoughts!