Given the fact the UT2K4 modification are still be played, UT3 will be very much alive - 6 months from now.
One though though - do -not- buy the Windows version now and. Wait for the Linux version and buy it from a Linux shop. (Such as tuxgames) *
* Due to shipment fees, the Linux version is actually more expensive - but never-the-less, there's power in numbers... and we need numbers.
DEV-NG: Intel S2600C0, 2xE52658V2, 32GB, 4x2TB, GTX680, F20/x86_64, Dell U2711.
DEV: Intel S5520SC, 2xX5680, 36GB, 5x320GB, GTX550, F20/x86_64, Dell U2711 (^).
SRV: Tyan Tempest i5400XT, 2xE5335, 8GB, 4x2TB, 9800GTX, F20/x86-64, Dell U2412.
LAP: ASUS N56VJ, i7-3630QM, 16GB, 1TB, 635M, F20/x86_64.