while verizon has stated (or rather the ceo and his odd walt disney mustache has stated) that they don't need msft/nokia, the company will go with whatever makes them money in the end. if the projections for the platform hold up over the next year, you can bet verizon will want a piece of the pie, there's only so many idiots you can lure into still buying a blackberry after all.
nokia has stated they would like to build a verizon handset, so that makes me think they will carry it if nokia makes it.
i am pretty sure we'll be the last in line for updates across the wp7 group of devices, but the way msft has setup the updates, they won't be able to just not update it, so that's something at least.
as for now, i just want the fraking phone, updates i will complain about later!