MRC, you're the pioneer.
From what I can see they changed the angle of the trigger guard, its now more horizontal, but I don't think they changed the angle of the actual trigger.
One thing I do notice now is the rear of the grip goes higher / close to the slide before it flares out, and they put more of a beaver tail on there so I'm thinking a shooter may be able to get the web of their hand slightly higher on the gun.
I'm wondering if the changes are going to make it not feel like a Rohrbaugh or is here still enough similarity there - especially the trigger, that it still feels like an R9
If it is real similar I think it would be great to train with a RM380 instead of my R9, maybe at the end of a shooting session I'd put a few mags through my R9 but get a lot of meaningful practice with the RM380.