I wonder why this "major company" is such a secret. Sounds a lot like the usual PR-stuff to me (Atari-name, Pegasos-gameconsole etc.).

And PearPX IS currently very slow. I dont see any sense to show MOS slowly emulated on a x86-machine. Even with a 3 Ghz-PC you would be lightyears away from a Pegasos II with 1 Ghz (an PearPC only emulates a G3, too). Which customer will be attracted by a slow niche-OS in beta-stade? Better show it as fast as it is on a PegaosII, with improvements (MOS 1.5) and more MOS-software. That could be attractive.