So, let the speculation begin! Will Sunrise go through Crunchyroll, so far the king of the English-language simulcast? Or will Bandai Entertainment, who (I believe) has handled every North American Gundam release to date, be involved-- or perhaps both? I've got an e-mail out to BEI to see if they know and/or can divulge any further information.
But in the meantime, feel to make up your own version of how things will be released in the comments.
As for me, I can see it going either way or both, but it will definitely depend on the release format. If Gundam Unicorn is an anime movie, BEI has managed to get some movies into theaters for short-engagement events, so it seems possible that Sunrise would want to go that route. On the other hand, if it's a TV series, Crunchyroll really has that process down at this point, and provides a pretty solid audience and (so it seems) payoff. If it's an OVA, though, and we're talking a DVD release in Japan? Obviously Bandai has more experience with DVDs, but the cost of a digital Crunchyroll release is probably smaller, so I'd say that one's a toss-up.
As always, speculation on my part-- now share yours!
EDIT: Heard back from Bandai, a simple "no comment."