You might ask this question on sassnet.com. Lots of those folks have been buying up the new 1876 replicas. Some were even tracking them down a few years ago, when they were only available in Germany.
"I want one of those case hardened cimmeron 4440s BAD!" -Those are 1873 rifles. Those are all made by Uberti, so you can get the same gun from Cimmaron, Taylor's, EMF, Navy Arms, etc., and just go with whoever offers the options, or price, that you find the most appealing. Or, for a few $$$ more, you could always track down an original. Original 1876 rifles are a lot harder to find.