PAX has been pretty news-free so far, truth be told, but AddictGaming did snap something called Halo 3 Mythic on the Microsoft stand.
Here's the only info known so far:
- There's a Dev System underneath, which could mean a fair few things.
- The options in the menu are Multiplayer only, no Campaign options.
- The version of the game is 1.2 (Retail Halo 3 is currently 1.1)
No one seems to know what it is, basically. More through the link.