Well... with "only" 35Mb, I wouldn't say that it's not worth the try.
It comes with 7 maps (I find 3 of them very good, 3 kinda good and 1 is the "what-were-they-thinking?" kind).
The most notable thingie is the kit tweaking (M60 -> Assault, Mossborg -> M72/M79) and the M60 fixes. Granted, they might have gone a little overboard with the M60/RPD (the crappy accuracy fix is a good idea in my opinion, but the spread might be, uh... spreading a little to fast when prone) and that might require a little touch up in the next version, but at least there is no more M60 whoring.