So far all I know is that I can send an MMS containing nothing but a single picture to another Alltel user that owns a Razr V3Ms. The picture was taken with my 8130 about a week ago, and was saved on my miniSD.
Later on, when time permits, I'll try to send various other file formats to people with other phones and service providers...and post my reports on this thread.
If anyone has any info about this, feel free to post it up!
EDIT: My buddy that owns an Alltel 8130 says he does not have the same options I do. I.E...when you go to your inbox, hit the menu key...he doesn't see Compose MMS. Same for hitting the menu key on a contact. It turns out he still has the original 4.3 OS that came on his pearl. I'm having him update to the newest OS for the 8130, which is what I have.
If alltel claims they have not released this fix, then what would explain why I'm able to use MMS now? Was the fix included with the 18.104.22.168(101) OS?