User blog comment:Warmachine375/When will Gun Gale Online become an anime?/@comment-71.89.82.47-20130801131510/@comment-6697950-20130801131833

To answer your first question, yes. It's neither confirmed, nor denied, while the people working on the anime said that they would like to do it.

Second, even it's announced soon, I'm guessing that 2014 would be the earliest for a second season. And it's not even announced yet.