First tapping I'm aware of (aside from the brewpub in Santa Rosa) will be this afternoon at the HopYard in Pleasanton.
Barclays is planning to tap a keg Friday at 6pm.
The brewpub is handling it very differently after last year's debacle. One keg will be tapped each day, it'll only be on until it's out but it will be available each day until the 18th. No growlers. A bottle has already shown up on Ebay (they don't bottle it) and they have caught people filling canteens to get around the no-growler policy.
While this is now officially the most ridiculously obsessed-over beer on the planet, I do look forward to my first glass.