According to the new blog post, there might be some Beta key giveaways at the Quake Wars stream, which starts in 2 hours (from time of posting)
Better yet, you’ll be able to follow the action on our Twitch channel, where TAW’s X4natosCrion will streaming the match. Rumor has it there may be a few spare Extraction key floating about during the broadcast too.
http://www.splashdamage.com/blog/1076/watch-quake-wars-6-6-finals-twitch-tonight#.UuP7lBAo6Cg