Yamaha/Steinberg USB Driver 1.9.2 for UR12 and UR22 (Mac)

Steinberg has released the Yamaha/Steinberg USB driver version 1.9.2 for Mac OS X.

The update for the UR12 can be found here.
The update for the UR22 can be found here.

I looked all over but could find no mention - does one have the UNinstall the old version driver before installing the new one?