A new version has been released that extends the timeout of the software to July of 2006.
Of course, you'll either need a "Genuine Windows" Product key on your OS or a good friend who does. (My "Genuine Windows" MSDN Universal Subscription Windows has always failed their little check, and I've never gotten an explanation for why, so go figure...)
Automatic updates are supposed to be turned on next week.
The AntiMalware team at Microsoft also has a blog here. Interesting reading.