Maxis has already published some information about Thursday's chat. As every week, there's a chat on the official site about one of the Sim-games. This week it'll be Cooper Buckingham (MaxisProducer) and Sean Hngunin (Lead Tester at Maxis) joining the chat. If you have any questions about the Makin' Magic gameplay, or what it's like to be a games tester, visit the chat. You can get there through this page, where you can also find the transcripts of the previous chats.