If they're gonna wait around on the teaser trailer, that's fine, but let's talk about what the first teaser POSTER should look like.
What do you want to see? I loved the "limited edition" poster with the relief of the alien and the predator curled around each other for the last movie, but obviously that was themed to fit with the temple of the first film. The main poster, with its striking white background, was also pretty nice... but just having an alien and a predator on a poster won't be anything special this time around. So how to shake it up?
Maybe they could just show two separate posters for each side - one with a resin-encrusted sewer tunnel and one with a cache of Predator weaponry displayed on a wall.