AtmosFear is a mod for S.T.A.L.K.E.R. - Call Of Pripyat that tweaks and expands the vanilla weather system to be more realistic and various.
Absolute Nature Texture Pack update that includes new hi-res grass textures, sligtly different for each level to add some variety.
There are 3 seasonal options to install: early spring, summer, autumn.
Get it from Addons section.
Glad that you guys are working so hard on this mod!
EDIT: I just saw all the screen shots you uploaded today, they all look amazing, i can't wait till this is released, absolutely realistic,detailed, AND GPU HOGGING???, just kidding.. just hoping an HD 4870 can run this..
yes that card will run the game no problem.. unless you have a 1980*1600 resolution.