Watch the Bend Release online guitar lesson by Chris Buono from 60 Electric Guitar Techniques You MUST Know
If you bend a note up and bring it back down, that is a bend release. With bending being the expressive tool that it is, it goes without saying the more ways you can do it, the better. Some options post pre-bend are flowing right into a pull-off after a bend release or just rest on that returned pitch and pepper it with some vibrato. These and myriad other phrasing choices combine to form a budding vocabulary of expression and provide you with a compounding collection of ways to get your musical points across.