Cornerstone splits your tablet screen to allow work with three apps at a time, might get into CM9
A multitasking feature called Cornerstone is being developed for the tablet CyanogenMod 9 ROMs, which splits your tablet screen to allow work with three apps at a time.
It's a neat idea, and the developers at Onsckreen aim to release it with the next versions of CM9, if the CM crew deems it stable enough. There is a drawer for two apps on the right-hand side of the screen, which can be called at any time by tapping a thin bar.
The drawer then pulls almost to the middle of your tablet's screen, squishing your current interface, and you can interact with all three screen parts now - the default one, and the two apps in the drawer that sit on top of each other.
These two apps that get pulled are, of course, up to your choosing, so we see numerous useful applications for such a multitasking solution like Cornerstone. Someone at Microsoft now is smirking condescendingly, but watch a video of the concept below,