Their past releases of older games' linux binaries doesnt mean anything now.
They've been saying that same thing for months now. "It's our top priority." Well, as someone in the QL boards pointed out, 1 single programmer working on both the mac and the linux clients is not a "top priority". Why can't they just be honest and say "Linux is just an afterthought, which we'll look into when/if we get time after releasing the final windows version"
Oh and just to put things in perspective the longest we've had to wait for linux binaries from iD is 3 months I believe for Doom 3 whereas I believe the Mac port of their games take 6 months or so.