Today Apple announced that developers have until March 31st at 5 PM Pacific Time to get their final apps in. This means the Final 3.2 GM seed is now available for developers to download from the portal.
Additionally, MacRumors notes that release notes for the GM seed reveal that the iPad will get one free major update. Owners will be forced to pay after that. For instance, people who buy an iPad now will get 4.x updates free as of this summer but will have to pay for 5.x updates whenever they come out.