Part of a BlackBerry 10 L-Series video tutorial leaks
The video appears to be in the style of the video tutorial for the BlackBerry PlayBook and shows how sliding down on the screen removes the menu at the bottom of the page, but reveals a toolbar on top. It also shows how an upward slide on the screen will shrink what you are viewing on the phone to thumbnail size. It's not much, but it just might get the juices flowing for those waiting for the big day.
source: BBVietnam (translated) via CrackBerry