Here's what I think.
If UT3 comes out on Linux, regardless of whether people are going to play it, it will still be the best FPS on the platform, bar none. It has every other game beat as far as graphics, sound, presentation, and gameplay. Of course I'm speaking for myself when I say that I think it's also very fun to play, but there's no way you can tell me that the rest of the game doesn't make Quake 4 look and play as good as a playground swing.
Some of you say you've already forgotten about UT3. In favor of what? What beautiful, Linux-native game soon to be released has your attention in such a stranglehold that you'd compare UT3 to pile of ground beef? Id hasn't confirmed Linux ports for any of their two latest games, HoN isn't even in the same ballpark, and Valve is set to release a Steam client somewhere in the next couple of millenia. Epic has absolutely no competition on Linux, and you guys act like it's no big deal if UT3 ever sees the light of day.
If you abandon all hope for UT3, you're basically saying the Linux platform is too good for these current-gen games, that Epic should move on with their next game, even though they clearly already have. And just so we're clear, a snooty, self-righteous attitude doesn't make Epic any happier to help.
The boat hasn't sailed. Some of the passengers may have left and gone home, but the rest of us are still waiting for either Epic to bring in the anchor, or a better boat to come along. And that horizon looks pretty damn empty.