The  Kivy GUI tries to keep pace with the spesmilo/electrum master branch at all times, which has implications on design and code. Charles' design is quite a departure from the one existing, and this is an ambitious project. Development has been mostly a one-person taskforce so far (akshay @http://kivy.org/#aboutus).

We have a tablet design as well. I wouldn't expect the APK to be production ready for several months, but it will be buildable and testable well before then. We still need to test it extensively on real-world devices and iterate on the code and design.