Today, AT&T announced their new tiered and capped iPhone (and iPad) data plan subscription options. New options include Data Plus, $15 per month for 200MB of data, and Data Pro, $25 per month for 2GB of data. Data Pro plans can add a tethering option for $20 a month. Starting June 7th, unlimited plans, which used to cost $30 a month, will no longer be an option for new customers. But before you get too worried…

In what is an apparent response to Verizon’s price cuts (as opposed to an act of customer good will), AT&T will offer their unlimited voice and data plans for $99.99 per month starting Monday January 18th, 2010. The unlimited plan does not include text messaging, but is available for AT&T phones, including the iPhone.