I'm sure you've read it elsewhere, but here's one more link. It was hard to sit on this as people were commenting their lament over not being able to get IMF, but trust me, it's worth the wait. You can find both SP1 and IMF linked off of http://www.microsoft.com/exchange, and here's the IMF directly: http://www.microsoft.com/exchange/downloads/2003/imf/default.asp.
Elsewhere at TechEd, the weather in San Diego makes the mood good. The convention center is huge and thus makes the crowds seem not so big, because there is a lot of room for people to spread out. We have a new concept this year called “cabanas” and it gives people a place to drop in, hang out, meet experts, and talk about their favorite topic (in the case of Cabana 10, it's Exchange!). They're encouraging speakers to spend all of their free time there, so you can always find 5 or 10 Exchange product group team members there. Drop by, I'll be there most of the day Tuesday and Wednesday (except during Dave Thompson's keynote on Tuesday morning, where they'll formally announce IMF release).