Here's a little quote from the article:
Higher dynamic range will be important for image longevity, Rossi argued. Five or six years from now, "printers and displays will be well beyond what current JPEG technology is capable of accessing," he said.
OK, Not sure how higher dynamic range will enhance longevity. A durable storage medium will, but higher DR has no effect on longivity.
Second, I don't see printers and displays being "well beyond" what current JPEG technology is capable of accessing. What is the limit of printing paper now, around 6 stops? You can only go as white as the whitest paper, and as black as the blackest ink.
Not sure about displays either - we've been making them for decades, and I don't see any giant leaps in capability coming.