R35 completes all the routes, there are no new routes, that'll be for the sequel.
R36 will release on January and it'll be the final release which will refine the game's mechanics up, and add some more content, and of course the ending. You can follow the changelog for it here: https://pastebin.com/tanaPpZF
Legacy of Hestia covers only up to volume 8, the sequel will start from Volume 9 (either as a new game, or imported save) and that's where new routes will happen.