Will u be able to transfer Unlimited AT&T data plan to iPad mini?

I have the original iPad first gen with the unlimited data plan from AT&T. I know I can transfer it to a new iPad 2 or iPad 3 but I'd really like to transfer it to one of the new iPad minis. I have been waiting to update my first gen iPad for awhile now. Still love the thing, but the iPad mini would really be better for me...lIF I can transfer the unlimited data plan over. Does anyone know? I can't seem to find any info, and nothing was mentioned in the keynote. Thanks.

Cheers. :-)