I assumed the mounting on the front to be the direct drive electric starter motor mentioned. I believe the power turbine running through the rear of the engine will be rigged to drive a common MR/TR driveshaft as is the setup in a single Squirrel (through some reduction gears, the power turbine output is translated downwards to the driveshaft below the engine, and the output RPM is also reduced).
Thanks apolloheli, I'm very familiar with the set up in the 365 with the Arriel engine but that angled projection at the front of the Hill engine looks like a very strange way to mount a direct drive starter.
If they have gone down the Arriel style route then they have only reduced complexity a little since you need a reduction gearbox at the back of the engine, something they didn't refer to or glossed over.