This press release announces the conclusion of an investigation whereby The ESRB has re-rated Grand Theft Auto: San Andreas as AO, Adult only. The change is based on the racy Hot Coffee mod for the game, and makes the game for those 18 and older, after previously being rated M, for those 17 or older. Word is there will be an upcoming patch that throws cold water on hot coffee, and in the meantime, a decaffeinated version is in the works, and updated rating stickers are on the way:

Rockstar Games has ceased manufacturing of the current version of the title and will begin working on a version of the game with enhanced security to prevent the "hot coffee" modifications. This version will retain the original ESRB M-rating and is expected to be available during the Company's fourth fiscal quarter. Rockstar Games will be providing AO labels for retailers who wish to continue to sell the current version of the title.