Looks pretty good that trailer for Bladerunner - i guess it puts the whole 'Is Deckard a replicant?' argument to bed. Well, either that or they'll convolute it to squeeze a story out of it.
That argument, and the ambiguity, is very important though. It wasn't a Shyamalanesque contrived twist at the end, it establishes a sense of doubt that informs the whole story, and reflects the trouble the memory-implanted creations have with their existence and whole sense of identity. It's so much better to leave it open, not to just explain to a thicko audience whether or not Gaff's origami unicorn was a mere coincidence, or that he held more than simple suspicions. It's an important element to interpret Deckard's subtle reactions as implying doubt himself, or acceptance, or defiance.
His reappearance 30 years on throws the expiry date matter right out, and I'm a bit concerned with how they'll move on from there; the various non-straightforward possibilities seem unnecessarily contrived, to me. "He's special, you see, because the plot of this one requires it". Seems just a wee bit cheap, doesn't possess the same class as the open-ended, audience-decides-for-themselves approach.
It'll be visually sumptuous, no doubt, but I fear it'll try to seem deep, but not quite manage it. I'm not actually that keen on the casting, myself. And I think a whole glut of
Blade Runner films, a la Disney's emerging
Star Wars offensive, is a horrible idea. Cinematically, that universe is there to experience in the original film and in writing, and to dream about with your electric sheep. I would say expanding upon it is better done through other media, especially videogames, especially VR. I hope this is a standalone sequel, not a testing of the commercial water.