The Rock Band network has been running in a private, invitation-only testing mode since September.

WSJ: MTV Games Seeks Buzz for 'Rock Band'

Initially, the service is to operate in a testing mode, and not be available to the public at large.

WSJ: Google to Unveil Online Music Service

Blizzard appeared to have only been testing a simple deathmatch mode, without attempting to throw any objective-based play in the mix like capture the flag, king of the hill or perhaps something more MOBA inspired.

FORBES: Blizzard Scraps Diablo 3 Team Deathmatch, Starts Over

The Europeans also broke from the group's normal mode by issuing a dissenting memorandum on ARF's official condemnation of nuclear testing.

CNN: HEN THE FOREIGN MINISTERS