Quite expectedly RIM has just announced its new platform called BBX. BBX combines "the best of BlackBerry and the best of QNX", as RIM puts it. The new BBX-OS based on this BBX platform will be for both smartphones and tablets, and will offer support for apps developed for the previous BlackBerry OS 6 and OS 7, but also Adobe Air and Flash apps, HTML 5 or even for Android apps thanks to the BlackBerry Runtime for Android software module. The BBX-OS compatibility with OS 6x7 apps is possible, but its native SDK will be much more powerful and flexible to build anything you may want.
GSM Arena, RIM announces BBX - the new platform for phones and tablets