I don't know if its just me, but I dont think the proto looks similar, even from an underbody point-of-view, to the G35. That other one was just a meaningless concept sketch. That said, they're conducting ring tests on the proto cladded up in G35 armour. So, maybe that's true.
Also, for some really long winded reasons I can't remember, this one won't be called the R35.
Here's a picture of testing, note the rocket tailpipes.