A bit misleading. The maintainers have been working on large experimental features like a self-hosted "signaling server" which helps sync notes without storing any note data on it, and without relying on third-party hosting like Dropbox [1].
Also if you look at the dev branch [2], they have been making sweeping changes to the codebase; most recently it appears they have been removing "old" JavaScript libraries like Bower, presumably to move everything to an NPM setup.