Square Enix has just put a new Kingdom Hearts trailer that showcases the series' upcoming 2.8 Final Chapter Prologue release and ends with a couple of minutes' worth of Kingdom Hearts III gameplay. Nothing ground-breaking, and III still seems to be a long ways off, but this is better than nothing, right?
Jump to 3:38 of the trailer if you just want to see the footage of III.
And if you need a refresher on what 2.8 is, here's the breakdown via the trailer's YouTube description:
Kingdom Hearts HD 2.8 Final Chapter Prologue contains the newly remastered Kingdom Hearts Dream Drop Distance, the cinematics from Kingdom Hearts Unchained χ [chi], and a special all new chapter taking place after the events of Kingdom Hearts Birth by Sleep. Coming 2016!
The 2.8 release is only for the PS4. KHIII is for Xbox One, PS4 and Xbox One.