BF2 will be coming out for PS2 and Xbox soon, and BF1942 is out for mac, so it will most probably be coming out for Mac sometime after the release for the other consoles.
Don't expect to have the original CS be ported to the Mac. On infos on CS: Source (the most recent one published with Half-Life 2) search for the 'havoc Physics Engine' here in the game forum.
As far as I know all the info you can gather here is still up-to-date