Being a 1911 guy I actually kind of like the 2011 moniker to differentiate the two frames for the same pattern gun. Kinda like M-16 and AR-15. That being said the first 2011 I can recall was a Para back in the late 80’s but there are several platforms that have double stack mags not on the 1911 pattern, XD and EAA Witness (CZ-75 clone) come to mind as I have both.
Cheers,
Craig6