User blog comment:ImagineTouma20/Dengeki Bunko 2015 Fall Festival Banner/@comment-121.54.58.242-20150610062246/@comment-26044807-20150610170552

OH&S I know you talked about those 3 announcements not having a particular source you could find but have you checked this website? It has a published interview with Miki and he says on the second page there are still 3 more announcements for the Kamachi 10th annviversary.

http://kjs-online.net/interview14-1.html