We have been hearing rumors for a bit that RIM is planning on standardizing the BlackBerry 10 screen resolutions. They have already confirmed that the first BlackBerry 10 device will have a 1280×768 screen resolution like the Dev Alpha. They explain that this is because the device is pretty far along in production but from then on out they will be using two new standard resolutions. That means future BlackBerry 10 devices will have a 1280×720 screen resolution (16:9 ratio) and a 720×720 resolution for keyboard devices (1:1 ratio).
The Cascades framework will be ready for all of these resolutions and RIM has some details on how this will work on their Dev Blog. Its great to see RIM being transparent about this. Let us know what you are thinking if you are developing for BlackBerry 10!