Capcom announced Ace Attorney Investigations 2 for the original DS well after the fact that we knew about 3DS. So the question of a localization has always been there. The title launched in February in Japan, but there were still no signs of a western release.
In an live stream Ask Capcom Q & A session, a fan asked if Ace Attorney Investigations 2 would see a release here. The reply was direct and simple. “No, sorry about that.” Definitely seems very direct compared to most companies when asking about a localization. So unless Capcom is just leading us on to believe so, don’t expect to get a second go around with Miles Edgeworth.
Quote is at 29:40