AT&T will hike data rates by $5 on all new subscribers:

As the AT&T network gets even faster with 4G LTE deployment – up to 10 times faster than 3G – and devices and applications become even more sophisticated, it’s clear that data usage will surge even more.Taking all of this into account – and our ongoing commitment to deliver value to our customers – we’re launching new smartphone and tablet data plans on Sunday, Jan. 22. The new plans give customers more data for more value. Existing customers will be able to keep their current plans but can also choose from one of the new plans.

AT&T’s previous $15 plan will cost $20 (data allocation goes up to 300MB), the former $25 plan is now $30/3GB and the $45 plan is now $50/5GB.