I called this morning (about 2 hours ago), and had my account transferred to this new plan, no problemo. AND, something else (I don't know if it's mentioned or not, as I didn't read all 11 pages...), if you have more than 1 year remaining on your contract (I have 14 months remaining), you don't have to extend the contract! Schweet!!
I'll be saving at least $10/month, and will now have 700 minutes more to use per month. Worked for me!
(I'm in Louisville, Kentucky, if that helps as far as what "areas" are available for this)