Looks pretty good so far. I'm wondering if, like Shockwave, TakaraTOMY will include the option of a right hand.
I'm also wondering about height - to keep 'scale' with the other cars released thus far, I would imagine in robot mode Inferno would rival Optimus Prime, possibly even being a bit taller taking the top of his head into account.
I thought that getting as close to screen accuracy as possible was the point of the MP series, so this simpler design would be in keeping with that objective. Then again, I have no interest in third party products, so I have no idea how far ahead they are or if TakaraTOMY has seen their design choices and taken those into account.
As kurdt pointed out, there are occasions when the toy-accurate head was seen on-screen, so maybe it depended on who was drawing Inferno at the time. Still, I wonder if there might even be two different faces once the official colour photos are released, like the ones on MP Bumblebee.