User blog comment:SpookyBoogie27/Light Novel Spoilers/@comment-74.110.105.73-20131027183752/@comment-1359322-20131028021328

Volume 17 being a Rossweisse Volume is already known. And no, there won't be any new girls for Issei for now, he didn't get one in 16, he won't get one is 17 and probably won't get any till the Irina and Xenovia volume are done with.