Kissu(at this point) won't be updating off of vichan anymore since the only updates are for paid things, these will be private updates most likely so there won't be any new content to get from them(We'll probably end up doing a bunch of clean up to post.php to make it easier to read anyways).
Likewise, at this point kissu has copied everything it needs from NPFChan so there's not much to look at from them. They're likewise stalling and doing mostly small updates(imagine running an imageboard for money).
Kissu's plans is to be developed for probably the next two years I guess. hard to tell, but there are a lot of UI improvements that need to be done to make it a competitive software against proprietary futaba. Feature wise kissu is already competetive, but the UI is shite so that needs to be worked on.
I also might do some things like remove flags and other /pol/ tier garbage from the software. There are also some other features like compatibility with NNTP but I think that's all dead so if it's a performance impact that might get removed.
Kissu could probably be called in a beta state when I finish off the mod and polling features. This meaning that the priorities will no longer be for grand new features that will differentiate the board from others(we have to stop adding new things and reflect sometime) and will be optimizations on the ways things are already done.
For archive purposes the banner sticky is at:https://web.archive.org/web/20190929202326/https://kissu.moe/b/res/1483