High-capacity revolvers are not so new.
https://en.wikipedia.org/wiki/LeMat_Revolver
9 shot Civil War era revolver with a twist.
And the S&W 627 is approaching voting age. I suppose that's relatively new but not exactly.
And the 627 is definitely bringing me back to revolvers for carry as soon as I can get my hands on one - either the S&W or the Taurus in 2 or 4 inch barrel.