Take a look at the screen-grabs I've made from the original 2.0 and three builds of 2.6b here:
r264 showed the most.
r273 and r294 dropping significant ones (like ffdshow and others)
r294 added an Intel codec (R3.2) twice for some reason that never appeared in any of the others!
This means Nick cannot use his favorite codec (besides CS Lossless, of course) - FFDShow-Tryout!
Others are panicking in the forums. I give this my highest priority! (a 7 - that's as high as I go... sorry!)