There hasn't been much improvement in fingers releases in a LONG time. Not many fingers shooters left and, besides, we had some great rests that left little to improve on.
I'm shooting the Cavalier Freeflyte micro adjust right now. An NAP Centerest flipper is on another bow.
GKF still makes a bunch of good fingers rests. You might snoop around on their site, especially in the Oldies but Goodies, Easy Adjust and Springie sections. But they hide good fingers rests all over the place over there, so don't quit until you've covered everything.
www.goldenkeyarchery.com/