We don't have any further content updates planned, as we've moved on to work on other games, and so the only updates would be bugfix patches and/or updates to fan-made mods.
As for playing the game on Android, that is not something we have official support for, but we have heard that some players have been able to run the game to some degree via the JoiPlay emulator. If you do want to test whether that works for you before buying the game, then I would recommend trying with the free demo first (the demo is the first 3 chapters of the full game).