It is not considered a consumer-replaceable item, though. Apple has acquired Astarte, a German company that developed DVD authoring software. All the engineers and code now belong to Apple, and in the future this acquisition will appear in new products. He didn't go into any more detail. The cube is mail-in service only, like the iBook and PowerBooks.
Turnaround is declared to be two or three days with no loaners in the interim.
In spite of service and quality-control problems noted on Macintouch, Apple is having the lowest number of returns and DOAs to date. I suggested releasing HomePage to open source, along with any other abandoned Apple properties. He said he thought it was a good idea and would pass it along. If you agree, send him a message. The more of us that Apple hears from, the more there will be a chance it will happen.