I've been working for the past week on a new kbin app. At the moment, it's just a prototype and only the "Feed" view has content (you can't sign into an account or post anything yet); you can see threads, thread images, thread comments, thread links, and thread votes/boosts. You can also change the "Theme Mode" and "Instance Host" in the settings.
My priority is definitely the development of kbin-core, especially now that work on the app has started. For now, I prefer to focus my attention on adapting the API to the latest features. It may turn out to be necessary sooner than expected ;)