Yes and no.
KRG probably sells more Bravo's than every other chassis out there combined, regardless of brand (even more so now that they offer a 10-22 option), so I bet they're more focused on manufacturing and shipping the stuff they already make more so than designing new stuff...
That said, their accessories and bolt-on options are still constantly expanding with new things trickling out over time, and they're probably the only company that doesn't keep all the coolest stuff just for their top-tier chassis offerings.
I've had a Bravo since I started shooting long range, and have had a Manners and a couple other chassis come and go... but since I've been able to just bolt-on more capability to the Bravo when I've needed to, it has "kept up with the times" without me having to scrap it and get something else. Most/many of the other companie's lower/mid-tier chassis' are throw-aways once new trends emerge with no option to add upgrades. I think their model of modularity, "upgrade as you go, add what you want", is still very innovative.