I work for a company that writes simulation software like this. Granted, I'm in IT, not a programmer...but it's interesting when news like this comes out about our competitors. Kinda gets my blood pumping. XD We put out stuff that ranges from chip design, to PCB layout, to wiring harness routing and cabling.
Sounds like this software will simulate the circuit-level responses of the ARM core to an environment you're developing. (e.g. build a Raspberry Pi, find out if you have enough address space to write to the display buffer...)