I don't mean to be snarky, but I don't think it is rare for us at all. I've seen a few articles before on the Prineville data center. I remember an article when they unveiled "Open Compute". At that time, there were quite a few articles about it.
Then please don't and try to refrain from posting :)
The rest of us haven't seen it yet and there are a few photos of the non open compute servers too. It's also perfectly fine to post older articles and stories here because they are often interesting to the HN community and make for good discussion.