According to this, Blizzard's Worldwide Invitational, to be held this June in Paris, has now sold out.
"All available tickets for the 2008 Blizzard Entertainment Worldwide Invitational are now sold out," said the company in an announcement. "Taking place over Saturday 28th and Sunday 29th of June at the Porte de Versailles Convention Centre in Paris, France, the 2008 Worldwide Invitational looks set to be another exciting Blizzard Entertainment gaming event. Be sure to check the 2008 Worldwide Invitational website often for ticketholder updates, the latest news on the tournaments, panels, and showcased content, and other news on what to expect at the event!"
StarCraft II and Wrath of the Lich King are confirmed playable at the event, and rumours of a Diablo III announcement are ever-present. Go on, Blizzard. You may as well.