I checked all the usual suspects...nothing. I found some with the shorter barrel, but none with the 4" barrel. S&W's web site is a mess - looks like the 3 Stooges have been programming.
For the popularity of the Shield 45 one thing that is lagging is holsters - or it maybe just that I'm looking for a shoulder holster that fits a bit better than the one for a Glock 19. I'm about to go upstairs and start looking at 1911 holsters and see what the size differences are.