I think there are roughly a dozen of these nationwide. Two in Colorado that I know of.
The economics of canning are still awkward. For really small operations, there's Cask's two-head manual system for ~$20k, but that can only do ~5 cans/minute and requires two operators. Then you jump up to automated four- and eight-head systems that start at ~$100k. Wild Goose in Boulder is trying to plug the gap, and Cask just introduced their SAMS unit that they advertise as being 15 cans/minute, but there's no proven solution for breweries in the 2,000-20,000 bbl/year range, give or take.