Very good work! Just tried the 1.1.40 build and the new state-of-the-art "Antenna"/TV button, and it seems to working correctly So, at least on my Viera, it now is possible to switch to every input except Component using the drop-down list, which is wonderful. I like the addition of the Input button to the Input tab by the way, because that way you could actually reach the Component input by repeatedly tapping the button.

As the "Antenna" button is now working, I can even switch between analogue and digital tuner by tapping it, so even one more problem solved. I don't know if that behaviour -- TV button switches between tuners -- is shared across all Vieras, but hopefully a few of them.