Years ago (15 of them, probably!) I saw a demo of a Philips no-glasses 3D display, and it blew my fragile little mind (I was only little..). So they've had the technology for ages, but it really is a case of market demand + content availability.

It really was impressive, though.

That is "lenticular", not particular. Same 'ol Philips stuff, projections all over the map, hedge your bets by betting on everything. I've been involved in the Philips lenticular development, and this is not likely to be accepted by consumers (too finicky on exact head placement). In fact, Philips recently closed down it's commercial development of this technology, so there is that for a vote of confidence.