"Auto image stabilization.
Motion blur and hand shakiness happen. And often you wind up deleting what could have been a great photo. Auto image stabilization helps avoid that. It works by taking four photos with a short exposure time. Then the best parts of those photos are combined into one image with as little noise, subject motion, and hand shake as possible."
I'll take the OIS and f2.0 lens in my Lumia 920. However, the fact that they have increased the sensor size and have an F2.2 lens should make low light a bit better. What's got me most interested in this phone's camera is the 120FPS 720p video! That would just be fun to play around with! Is that pure hardware....or is that something that could possibly be tweaked by a software/firmware update?