http://www.youtube.com/watch?v=c0zRvABCHMk
http://www.youtube.com/watch?v=YgERb_aEBX4
http://www.youtube.com/watch?v=kMxsxq-MC-k
http://www.youtube.com/watch?v=Cc-oIWqxG50

from planetquake:
"We're pleased to announce that Quake Arena Arcade will be available for download this coming Wednesday (December 15th) on Xbox LIVE Arcade.

Frag up to fifteen of your friends in six game types over Xbox LIVE, including Deathmatch, CTF, and Harvester modes. Quake Arena Arcade features over 30 classic maps, 12 Xbox-exclusive arenas, HD and widescreen support, and a brand new single player campaign."


so that's where all missing content is: in the most boring console game I've ever seen.
Seems like id doesn't get some of the most basic principles of fps games in consoles yet we get less content in QL because of that.