I think it's nice if every generation/cycle/phase of ST does its own thing, even if it's reflected in something as seemingly inconsequential how they name their movies. It's like they're making a statement. The TOS films did the numbering thing; TNG films did the colon thing. I'm glad they're at least trying to not repeat either formula.
It's still possible though that this is only a temporary title. With no teasers/trailers out yet, they certainly aren't bound by anything.