This article says the jury decision is still days away.
Your guess is as good as mine. Maybe they’re going to draw this out to wear them down before the announcement.
http://gawker.com/missouri-gov-declares-state-of-emergency-ahead-of-ferg-1659762399
But it’s going to get a lot warmer there by next week, they’ll be able to be out in the streets 24/7.