Someone posted this
on GAF, since Capcom said there were lots of secrets hidden in trailer. Worth a look:
Judging by the trailer, the bands seem like an interesting element. Seems like green means a person is not infected, the girl holding the 'Itchy, tasty' sign, which is generally assumed to be the thoughts of people who are becoming infected since that same thing has been mentioned in a few Resi games (Keeper's Diary from REmake being one such example, and the file that line is directly lifted from) goes from green to red so she's became infected, and the red means zombiiiie! The storyline implications of this could be that this is how the world is handling all these bio-terrorist attacks now, it's an easy way to tell if anybody is infected and to try and stop outbreaks from happening again. So perhaps infection is now controlled? It's regulated, perhaps. It's not cured, but the world (or country, or city) is trying to handle it.
So, I'm thinking maybe this could be similar to how Dead Rising does it, with Zombrex. The zombies aren't gone, infection is still out there, but there are ways and perhaps medicine of attempting to control it and preventing another outbreak. As another user on GAF pointed out the game could even go into the dynamic of the rich being able to afford wristbands like these whereas the poorer people can't, and so in poorer places of the world (country, city) zombie outbreaks happen. It could be a very interesting concept, but it is of course all speculation based on what we've seen in this 1 lone trailer.
OR it could be the very opposite of what I'm saying. In a big evil way, the wrist-bands could be how the terrorists are seeing who's infected as they try and spread the virus. Since one of the people holds the wrist-band and turns so, maybe that's what caused it? Anyone who wears the band gets infected and they get tricked into doing so. Maybe. I don't know, but it's fun to speculate.
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Anyway, I've been really excited about this for awhile now! It's been pretty much confirmed ever since the box art and blurb was found hidden on xbox.com, and I'm glad finally Capcom showed us something. Loved Revelations, and my only problem with it was it being held back by having been primarily developed for the 3DS. Considering Revelations 2 now hitting everything but Nintendo platforms (PC/XB1/PS4/360/PS3) I can't wait to see what Capcom can do! I hope it being cross-generation doesn't hamper things too badly.
My biggest desire is they keep Raid mode. Please Capcom, don't take that out! I love Mercenaries in modern Resi games, RE6's gameplay worked so well in that mode and I had a blast with it, but Raid mode was just so damn good! Played that so much when I got Revelations on PC, so I hope they've kept it.