I'm noticing that the 4TB model has lower quoted specs than the 2TB model - not as low as the 1TB model, but still interesting as means that there are configuration quirks between the controller and the NAND flash.
Obviously interested in delivered speeds and endurance both short-term, i.e. significant continuous writes leading to slowdowns and heat generation, and long-term with respect to the flash life itself, i.e. are we going to see a decrease as speeds and capacities are pushed etc.
Also wondering what kind of cooling scheme the industry is going to settle on. We're still in the 'fast and furious' days of innovation and there are several more generations of PCIe already spec'd out. I do expect that the more or less 'end state' of NVMe will involve optical interconnects, and at least Intel has already proven these in mass production as single integrated circuits with controllers for their 400Gbps optical NICs.
It's sinc-ception. Heatsink on heatsink.