The fifth rune is a Viking Compass, and Blizzard did release a game about Vikings a long time ago.

Don't kill me :)

Again from Diablofans forums, definitely strengthens the Starcraft idea.

14 hours 15 minutes until the start of the WWI. supposedly this site will stream the opening and closing press conferences along with the tournaments for starcraft (and maybe warcraft).
http://eu.blizzard.com/wwi08/streams.xml

Starting to look like Protoss... World of Starcraft or re-entry of Starcraft Ghost wouldnt surprise me. But I do hope its Diablo 3 like everyone else.

They have been hiring for a next gen MMO for a while, so it might be World of Starcraft (would get loads of sales from Korea), but I would also prefer Diablo. Now that I think about it, there were rumors of Infinity Ward possibly working on Starcraft: Ghost once the merger went through, and they are rumored to be working on a sci-fi shooter at the moment.......

EDIT 2: Wow, I'm a moron, just saw another flash def not arthas.

EDIT: Before I get flamed, I'm saying what I beleive the picture is, not if diablo 3 is coming or not.