If you pre ordered you're fine. If you order the 27th you're fine.. you will keep unlimited data
DROID RAZR MAXXIMIZED!!!! PREPARE TO BE VANQUISHED!!!
After doing more research, I did read that you get to keep your unlimited. I'm bummed because I just upgraded a line to get my MAXX. Luckily Costco gives 14 day return policy. I might have to return the maxx and preorder the sgsIII