"The only game that ever sold more on XBLA this fast was Minecraft," the update reads. "We are not just riding on this train, however! We're never going to stop pushing to make the best games we can. If you're wondering what we're working on to make this game even better, please check out Jeff's Title Update post."
Said title update resolves several bugs and makes minor tweaks to various gameplay mechanics; it is expected to go live sometime next week.