Apple’s WWDC conference keynote speech is due to begin at 10 am Pacific time, and it’s being liveblogged at Engadget and Gizmodo. (Looks like Gizmodo’s page is Ajax-driven for auto updates...)

Apple’s expected to announce new versions of the iPhone, the new iPhone OS 3.0, and possibly the latest upgrade to OS X, code-named Snow Leopard.

UPDATE at 6/8/09 11:46:34 am:

Release dates: Snow Leopard, September. Current Leopard owners can upgrade for $29 ($49 for the “family package”).

iPhone 3.0: June 17. Free for all iPhone owners, $9.95 for iPod Touch.

UPDATE at 6/8/09 12:04:42 pm:

The new iPhone 3GS with 3MP still/video camera:

16GB - $199
32GB - $299

The 8GB iPhone 3G price has been lowered to $99.