a few things already done:
new road, gravel, grass textures (including bump, specular, add - will do new multi as well)
3D fences - 3D posts, droppers, star pickets with 2d wire texture (no longer a 2D wire+post texture)
race/spectator cars
higher poly models (including pits and control tower)
more effort into shading the models with textures (generally not true baking, but better than nothing)
tannery and newry corners smoothed
terrain has been improved
larger hump on union street (just before the pub)
lots of new, better textures, made by me (plans to replace all third party textures)
i assume there has been other work as well
before 0.99 is ready though i'll have to redo the AIW (<flat affect> yay... </flat affect>)
but generally i'm quite excited by this update!