The Tomorrow's War that won awards etc. was a supplement for Force on Force, released by the Ambush Alley guys as a pdf.
The hardback version of Tomorrow's War, produced by Osprey, is an entirely standalone game, incorporating additional material – rules, scenarios, artwork etc. It has not (to my knowledge, anyway), received (or even been nominated for) any awards. It would be nice if it did, though.
The advance copies came in the other week – I've got one on my desk as I type – so it definitely exists!
Phil