132 1B is indeed in production. Unfortunately, demand is very high and most distribution is being designated for LEOs, and that will be the case until supply catches up with demand. The same scenario was true when LE 132 00 was first introduced. Ammoman.com had stock about about 5-6 weeks ago and I purchased a case, but he sold out really fast.
I can tell you that LE 132 1B is the best HD load that I have ever used and that it patterns as well as LE132 00.
The Box O'Truth recently reviewed LE132 1B:
Others have also posted results of their pattern testing; here's one thread: