The designs in this strung along leak for the N-Series and L-Series BlackBerry 10 devices seem primitive for this stage of the game but may give us some insight into RIM’s plans. Many users have been wondering what will happen to the BlackBerry classic trackball since it is missing on the BlackBerry 10 devices. According to this slide scored by N4BB the N-Series QWERTY keyboard packing BlackBerry 10 device will combine the touchscreen with the keyboard. It will offer an augmented touch section of the extended keyboard commands for things like word completion and umlat selection overlay.
This might cramp things a bit on the 720×720 pixel screen but I do like the idea. Still one of my favorite parts about the trackpad is the ability to use the phone with one hand. Hopefully RIM manages to incorporate that in BlackBerry 10.