Gigaom has good article on how it will benefit MVNOs reselling AT&T services like Red Pocket and H20.
http://gigaom.com/apple/att-unlocks-...os-a-big-gift/
Red Pocket offers unlimited talk/text and 2GB data for $60/month. That beats AT&T hands down. H20 offers unlimited talk/text and 1GB data for $60/month.