Reply To: Blender 2.91 Official Release is here!
One really cool feature already introduced with Blender 2.91.0 Alpha is the “Face Set Extract Operator”:
It duplicates the faces of the selected “Face Set” as a separate object and adds a “Solidify Modifier” to it:
It reminds me of the “Sculpt Tools” addon function “Extract Mask” used by Kent here at 2:42 for the creation of a belt for the “Wrangler” character.
A video demonstration of the “Face Set Extract Operator” can be found here.