For all of you complaining about the $20 S&H cost for the 10.1 update, it is pretty justifiable. There will be at least 2 CDs if not 3 (OS X 10.1 and 9.2.1 CDs, maybe an updated Developer Tools CD). There will also most likely be a manual much like the one included in OS X 10.0's package. As to the update's being downloadable, I have two words, "Yeah, RIGHT!" The update is over 400 MB in size. Apple's servers wouldn't be able to handle that, and that is why it is a non-downloadable update.
The WSJ says, and Apple has confirmed, that you will be able to get the package free from Apple retail stores, and from select Apple Authorized Resellers, although no specific retailers have been named. So those of you who live near an Apple store are DAMNED lucky (waaah, I don't.. just near the Palo Alto one which isn't even opened

-- maybe I could walk down there and ask the construction guys if they'd give me one?

).
The cancellation of Apple Expo probably won't have a bearing on 10.1's release, although it is almost assured that 10.1 will be released this month.
-- simX