As mentioned and shown in the NAHBS entry, Phil Wood has developed an aftermarket shell for the Rohloff internally geared hub. I believe they first made mention of the new product on their Facebook page back on Feb 16th, in parallel with an updated to their Blog.
Aside from adding a lot of bling to show bikes, the more practical application of what I suspect is a somewhat pricey piece of kit would be adding more spokes for heavy-duty applications, e.g., tandems.
From Phil Wood’s blog, it notes that their Rohloff shell can be drilled to accept 24,28,32,36,40 and 48 spokes.
More to follow, I’m sure.