There's a couple of "revamped" units in there to be honest. The neutral faction IFV is a Pandur 2 from Arma2 Czech expansion. The Ka-60 Kasatka was in Arma 2 (Opfor transport helo) and the small Blufor helo is basically the Little Bird. The Blufor wheeled IFV is suspiciously similar to a LAV-25, though not quite. And the AA vehicle on both sides has the same turret at least. Then there's the Titan missile launcher being common among both factions, along with the different explosives.
All in all both sides are well rounded though. The one thing lacking is indeed fixed-wing aircraft. I imagine those will come in with the next patch, not quite making the cut for release.
