I haven't had a chance to fly with these yet to see if I have any image quality changes, but running TheBlackDeath with max in game settings plus those listed below, there was an ever so slight increase:
E6600 @ 3.3 GHz eVGA 8800GTS 512 (G92) 2048 DDR2 1000
8x AF 4X AA High Quality, no optimizations max driver quality settings, supersampling on, vSynch off, triple buffering on. Water=0 1600*1200 res
December 26, 2007 dlls:
Frames: 11880 - Time: 151947ms - Avg: 78.185 - Min: 29 - Max: 163
Feb 27 2008 DLLs:
Frames: 12023 - Time: 151807ms - Avg: 79.199 - Min: 29 - Max: 164
Same settings as above but with Water=2
December 26, 2007 dlls:
Frames: 10586 - Time: 152004ms - Avg: 69.642 - Min: 26 - Max: 131
Feb 27 2008 DLLs:
Frames: 10706 - Time: 151989ms - Avg: 70.439 - Min: 26 - Max: 131
For specifics see here:
http://www.gozr.net/iocl/viewtopic.php?p=29875#29875