presumably the week before the next UI paradigm is announced at I/O 2016...
Honeycomb was introduced in 2011. That's three years.
And besides, Android is on design iteration #3, Apple is on #2, and I think most would agree iOS was aged pretty badly by the time it got #2.
Personally, I find Android's 2.x design about as much as a design as a factory floor's sounds 'music'.
presumably the week before the next UI paradigm is announced at I/O 2016...