Diablo III Website has a post-launch update for Blizzard's MMORPG. This includes news that they "have made the decision to move the launch of the real-money auction house beyond the previously estimated May time frame." They also offer more on security issues. They also discuss hotfixes and plans for a fuller patch next week:

Since the game's launch, we’ve applied a number of hotfixes to address gameplay issues, made tweaks to improve our service stability, and performed occasional server maintenance when necessary to ensure that in the long term, players have the best gameplay experience possible. Moving forward, additional server maintenances will be required -- and sometime next week, we plan to release a game update in the form of a patch that will further address client issues and apply additional bug fixes.

We also wanted to let you know that we're still looking into the best way to address the achievements that some players lost in the hours following the game’s release. While we don't have any concrete details to share with you just yet, we will have more information to share in the weeks ahead. We appreciate everyone's patience as we work to improve stability and usability for all players.