It's really getting to where there are four things that are especially worth watching from WWDC each year:
1. The keynote (of course),
2. The "Platforms State of the Union" presentation (of course),
3. John Gruber's "DaringFireball" live show (for off the cuff / behind the scenes remarks from top Apple folks),
4. The
"Accidental Tech Podcast" live show (for John Siracusa's* well-reasoned take on the announcements).
*: he's the one who used to do the book-length in-depth reviews of each new OS X release for ArsTechnica.