User blog comment:ImagineTouma20/Dengeki Bunko 2015 Fall Festival Banner/@comment-80.229.138.199-20150629225953

I'm not going to pretend to know anything about anime announcement/release schedules and trends, but just looking at the original run dates for Index and Railgun, there was a full two year gap between the end of season 2 of Index and the start of season 2 of Railgun. Railgun S finished at the end of September 2013.

Looking at that, it doesn't seem too hopeless that something could happen, does it?

Tell me if there's something I'm missing, but to me it seems a bit too early to say anything for sure either way.