User blog comment:B214/Season 3 confirmed!!!!!!/@comment-82.114.89.218-20140719142232/@comment-1359322-20140719151212

Did you read properly, he only said it's his guess. He never said it will be out on April 2015. The Dx1 is a short story compilation with an OVA, so it might give out some info on the anime but the release date as of now is unknown. For all we know the anime might be release way later than the Dx1. It might be a month, it might be three months, 6 months or even a year after the OVA is released.