Apple has just released a new developer build of Snow Leopard, the first since WWDC 2009. This one is Mac OS X 10.6 Snow Leopard build 10A394, and is the first Snow Leopard dev update that is available simple by firing up Software Update. Just a word to the wise, after running the update, you’ll need to download and install Xcod 3.2 for Snow Leopard 10A394, and if you do iPhone development on your Snow Leopard system, you’ll need to download and re-install the iPhone SDK 3.0 for Snow Leopard. Have fun!
Update: For those asking, yes, Dock Expose is live in this new build!