User blog comment:B214/Don't ask about season 4/@comment-86.153.169.129-20160601070140/@comment-26402117-20160615194329

That sources its stories from Natalie, Animeanime, Akiba, Dengeki and loads of other huge Japanese anime news sites. It can be beaten for speed.

This wiki is only a good source of info for English readers as it also uses Japanese sources such as Ishibumi's twitter and Fujimi's publisher page.