Nokia supports it till 2015 iirc. Not sure about dalvik or nitdroid. I wish they did port android to it, just for the hell of it. Its a semisuccessor. More of a spinoff, really, than a sequel. Personally I had the SGS2, and sold it to get an N9. N9 is, for me, a better phone. Multitasks better, appswitches better, and has a better design. Course, you COULD get the lumia 800 or wait for the SGS3/Lumia 900. Wouldnt recommend nexus at least, since sgs2 has better HW (albeit lower resolution).