Just a quick reminder that free Street Fighter IV DLC, called the Power Up Pack, is now available on Xbox Live Marketplace. The pack comes with the new Championship Mode, which adds new tournament features and double-blind character selection. The pack also includes a new Replay Mode, which allows players on Xbox Live to download replays of matches, which even include the controller inputs used by each character.
The download clocks in at 16MB and, once again, it's free. Strangely, it appears the DLC is not available on PSN just yet. We'll be sure to let you know when it shows up.
Update: We apologize for the error, as the DLC has been available for the PlayStation 3 version as an update for a few days now.