Another excellent opportunity for developers who didn't get a ticket to WWDC 2012, but are going anyway (or live in San Francisco -- there's a few, I hear) is Appsterdam at WWDC. Veteran developer Mike Lee built a successful developer vibe in the Netherlands, now his team is bringing that same awesomeness to San Francisco during WWDC.
They'll be shacking up in the StackMob offices and, similar to IndieDevLab, will be providing co-working space and more. What more? Check out this schedule of events:
Monday