Battle.net has a splash screen with images that change upon refreshing. The images feature characters from Blizzard's previous games (Starcraft, Warcraft and Diablo):
Image 1
Image 2
Image 3
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Image 5
Image 6
Image 7 (rare!)
If you view the page source code you'll see the words "get ready" near the bottom of the page.
On the Warcraft 3 Ladder Season 3 website you'll find the following:
"On October 7, we’ll be launching the new Season Three website and revealing the dates of the other qualification periods, sponsors, prizes, formats of the tournament, details about the LAN finals, and more!"
That would explain the Warcraft connection but the StarCraft and Diablo pictures are still a mystery.
People have speculated Blizzard could be announcing StarCraft 2, the WoW expansion (although that has already been announced, kinda) and Diablo 3. I have my doubts but let's hope for the best.
UPDATE: It's a new site. Move along folks.
