A recent screenshot on the Google I/O App as discovered by Phandroid could well be one showing of Android 5.0 (Jellybean) if rumours are anything to go by.
The suggestion that it’s Jellybean comes from the fact that the Holo theme at the search bar has been swapped out for a more transparent search bar and that the stock browser appears to have vanished and been replaced by Google Chrome.
Of course this is just guess work for now and should be taken with a pinch of salt.
Has anyone else noticed the strange time at the top of the screenshot? Is this a hint for something else?