No, will not go dead, never really will, but will continue to morph, refine, and evolve to emerging options. Every generation of telecom and computer equipment I ever worked with has gone through this never ending iterative process. When I started my career in the datacomm business a commercial 9,600bps modem weight 55 pounds and had 11 edge cards on a bus. It took a few decades for all that to land into a single chip. Same with servers, same with emergent internet equipment, again, a $50,000 router took up 22 RU in a rack and now costs a few thousand and weighs a pound. Then SDN (Software Defined Network) arrived and started packing all that gigabit data transportation capability into a compact 1U server and it used to take a full rack, or two to do that, and so on. Plus, the network fibers attach directly to the server, now. This process does not stop, but shall continue. GPU + RAM + I/O is everything. RAM pricing is bumping right now because of short term demand and will self level itself in a short time and that does not count innovation - that which produces the long tail of repurposing each generation. The learning curve and the paradigm itself will forever fuel our home adaptations and I like it that way. :-)

I must investigate these pronto. I spent my life installing and provisioning telecom and datacom racks and cabinets of every imaginable floor, wall, and "other" configurations, but once we moved away from the old crossbar systems used by telco COs long ago, the 19" standard has ruled.

@Brandon Lee Same here. The world I worked in needed all that space and power. Data centers, comm centers, MDF and IDF rooms galore. Fitment solutions for speciality applications, and so much more. The needs of the market are shifting radically in this season and a new adaptation for mounting is needed and it appears that this 10" standard is it. Standard being an operative word here. I will go looking to see where the EIA/TIA standards development process is right now on this.