The first patch for Madden NFL 12 is set to come out tomorrow for both the Xbox 360 and PS3. The update will address issues such as the rate of rain-games for some teams in Franchise mode, organization of custom playbooks, a QB sneak exploit, and commentary amongst a number of other improvements. For all the details on what will come with the first comprehensive patch for Madden 12 check out the full detailed list here.
(Update) The patch arrived early for the PS3 on Monday afternoon! Expectation is still Tuesday for it to be pushed out for the 360.