I am a huge Live Tiles fan, so I was clapping my little hands when I saw the new UI for Windows Phone 8.
As can be seen on the screenshot, it is now possible to resize the titles as desired, meaning that there are now three sizes of tiles, and you can change all tiles just like on Windows 8. As far as I know, there are no new hardware news yet, since yesterday’s summit was solely focused on the developers. However, I am pretty sure we will soon see some new hand sets from Nokia, HTC and probably Samsung.
The keynote is now online here.