As usual, if Apple hasn't rolled it out, there's no application for it, it makes little-to-no sense, etc. I recall how the cheerleaders railed against those of us who thought the first iPad should have a front-facing camera. They passionately argued that it made no sense, "why would I want people looking up my nose", "how would anyone hold it steady enough?" and on and on. Then, out rolls version 2 with "facetime" and some of these same people flip flopped hard by suddenly seeing the benefits: "Take my money", "I'm already in line for one", etc.
I recall how the cheerleaders railed against 1080p via
TV while Apple clung to a max of 720p. "I can't see the difference (so you can't either)", "streaming 1080p would crash the internet", "until national bandwidth is expanded everywhere it makes no sense", the chart, crazy file sizes and on and on. Then, Apple rolls out 1080p and it's as if all that 720p passion evaporated overnight and then some of the same people gushed about the quality of 1080p (from Apple).
There's a great Arn post over in a forecasted 2013 product roadmap thread at:
https://forums.macrumors.com/showthread.php?p=16671215#post16671215 post #34 in which he includes two links. Click those and start reading the comments. Sound familiar? When those things that "made no sense" and "had no application" and "total fail" came to be- that is, when Apple actually rolled them out- THEN they made great sense, "take my money please", gush, love, can't get one soon enough, etc.
This is a very cool, usable technology. Look through many threads here and you will find people arguing about screens being too big or too small in Apple iDevices. The thread "Which iPad should I buy- mini or maxi?" has been started about 1000 times now. Here's a technology that would make it possible to buy ONE device and have multiple screen sizes at your disposal. Fit in a pocket AND offer a big, expansive screen.
Look through other threads and you'll see a crowd whining looking for something genuinely new from Apple. "I'm tired of the same old iPhone design". "Where's the wow factor?" Etc. An iPhone 6 or 7 that could do some of that stuff shown in that syd430 video reference would definitely feed the "the new one has to be obviously different than the old one" crowd.
That video gives us a peek at a few of those kinds of possibilities. It's both cool and potentially very functional. Samsung innovated something cool so we can't like it... until Apple puts it in something. Then, about 2 or 3 years later we'll "remember" it as an Apple innovation.