What does it mean?

The splash screen changed on Blizzard's site late last night to a blank energy field or rock / crystal formation. It's hard to tell exactly what it is, but it also has some form of glyph or signature mark in it.

There is no more information on the screen other than a move on to Blizzard's site.

Obviously something is up and will be announced this weekend at the Invitational in Paris, but what?

Keep your eyes open for more information.

You can check out the site here: Blizzard.com.