In my experience, Shimano 10spd & 11spd talk to each other no problem. They even have 10/11 interchangeability with the latest Deore lineup.
At my place we have a couple drivetrains that use 10-spd shifters (XT/XTR) with 11-spd XT derailleurs (11-46t 10-spd cassettes).
Dec. 7, 2022, 9:42 p.m. - Andrew Major
In my experience, Shimano 10spd & 11spd talk to each other no problem. They even have 10/11 interchangeability with the latest Deore lineup. At my place we have a couple drivetrains that use 10-spd shifters (XT/XTR) with 11-spd XT derailleurs (11-46t 10-spd cassettes).