I don't think the merge will have any influence on them fixing the MMS issue, because merge or not...Alltel's system will stay intact. Verizon would just be taking it over in terms of who owns it all, I'd imagine.
There are a small handful of members on here that are somehow able to keep track of what's really going on with the Alltel MMS issue, hopefully there's some updated news to be told. Again...don't take the customer rep's word, they don't actually know what is going on. They'll just tell you "next month it will be fixed".
Last I heard, update number 2 or 3 was sent from RIM to Alltel for testing...and it was failing. You'd think they'd have it figured out by now since MMS is a big deal, especially to people like me that dropped around $300 for a pearl.
EDIT: Because of this being a topic that is re-posted almost every week...there should be a sticky made about the Alltel MMS issue so new users can read up about it, and other users can view it for any news regarding the problem. That'd be convenient.