Last year, WWDC tickets sold out in just over a minute, so this year, things are set up a little bit differently:
Developers can apply for tickets via the WWDC website (developer.apple.com/wwdc) now through Monday, April 7 at 10:00 a.m. PDT, and tickets will be issued to attendees through random selection. Developers will know their status by Monday, April 7 at 5:00 p.m. PDT.
Google has a similar lottery setup for I/O this year, too. This is probably the most fair way of dealing with the high demand.
Beautiful logo this year as well.