If anyone is desparate for heatsinks, I understand power8 heatsinks are physically compatible. There are usually some on ebay in various heights. Some part numbers may be 00RR234, 00RR232, 00E8918, 01KL499. I think the 3u with fan was only used by Raptor, so there probably aren't many out there. 3D printing a fan shroud is probably not too hard.
Some news would be nice, but I'll admit I'm feeling a little pessimistic.