The official specs for N8, the first Symbian 3 device are now out. They have also produced a series of YouTube videos that you can access for this ‘media wall’ by clicking (let the video first load until the menu):
It is still a bit early to say what the actual use experience will be, but I hope they have managed to get the UI and user experience into more simplified and streamlined mode in this version — the tech itself is pretty impressive as that is the traditional forte (mobile media codecs & engineering) of Nokia, not so much the UX, unfortunately.