Technically speaking, there isn't a Gen4 G30SF. The G30SF is Gen3 only and marked with "SF" on the right side of the frame forward of the slide lock. The recently announced G30S pistol bears the SF mark of the Gen3 G30SF frame too. However, the OP's new pistol, the Gen4 G30 is marked with "MBS" (Modular Back Strap) in that location on the frame, as are all other Gen4 pistols.
The Gen4 G30, without a back strap adapter installed, has essentially the same grip dimensions as the Gen3 G30SF. The OP is excused for the title of this thread due to his excited state, having just received one of the finest 45ACP pistols available.