User blog comment:Warmachine375/When will Gun Gale Online become an anime?/@comment-74.12.192.154-20130715092309/@comment-6697950-20130715093153

It's highly likely that there will be a seconds season at some point in the future, but we have no idea when will that be.

As for the dub, I'm pretty sure it starts airing somewhere between the end of July and the middle of August. Since that's less than even a month's time from now, if a second season is produced, it will definitely be released months after the dub.