Ah yes, sorry I missed Archon off the second list. Also added Skyfox as the second EA game announced in development and sheduled for release sometime late (Sept/Oct) 1985. There are two other games from this time appearantly. These may be false leads, but there is Conquest and Trek73 on Fred Fish Disk 10.
Trek 73 was converted from Basic in to C, and released 18 Jun 1985 (according to the docs). But the Amiga wasnt released until July 1985 so I'm no nearer with that one ether.