Not by design, so far as I know, but some will.
I agree with a previous post. I don't know of any that are DESIGNED to release when a new mag is inserted, but I do have a few that get a lot of "range time" that will do it. I have a few pistols that are for target range only - like a Ruger 22/45 Target - that I've installed mag pads on for each mag, and reloads are done with a "smart" smack to ram home. Same goes with some mags I have for an old S&W59 that have bumpers. I don't really object to it (come to think of it, my Glock 17 will do it on occasion WITHOUT mag bumpers) other than the fact that it's nice to have the same thing happen (or not happen) EVERY time. With the Glock, too, we're talking a pretty solid rap to seat the mag. MY guess here - and this is a guess - is this is all about how much force your slide release can take in terms of kinetic energy. If you tighten everthing up to where it's impossible for the mag seating to overcome the mechanism, it'd probably be a hefty slide release indeed. For my personal use, it's not a safety issue, because I know how hard to smack a mag to get the slide to release - like a practiced technique - and you can BET I only rap 'em that hard on range, weapon pointed downrange. If I'm loading a gun at home the procedure is different. I do NOT have any firearms that release a slide (or bolt on the Ruger) by gently but firmly inserting a mag.