The 2.5 update should roll out in the next few hours. But please, DON'T DOWNLOAD IT. It will delete the game from your console. Wait for me to post here when it's been fixed and is safe to download. In the meantime, back up your TM game and data files to USB.
I repeat, if the dashboard prompts you to download the update, don't download it. Wait until you see a new post on this topic saying it's safe to download.