The Falcon 040 was designed and ready to ship but it got scrapped as Atari pulled all its resources into the Jaguar.
A picture of the Micro Tower version can be seen below. I don't know much about it, but it did add many expansion slots to the original Falcon design.
Where is Burseg anyway? You'd think he'd jump at the chance of joining this discussion due to his all new Atari avatar.
I guess the "Lost Computers - Atari Falcon" thread we could have set up separately has kind of merged into this Archimedes thread now.