The platform has more cast-related features in the works, as well. German site SmartDroid (via Android Community) has spotted what seems to an experimental feature rolling out to select Android users, which turns the mobile YouTube app into more of a bona fide remote control while you're casting.

At the moment, you can only pretty much use the app to pause, play and adjust the volume while you're casting to a TV. The updated controls, however, show a directional pad that makes it easier to browse videos, and include quicker access to captions and playback quality settings. You'll be able to access those new elements through the volume panel that pops up when you tap on the cast button -- that is, so long as you're one of the users lucky enough to get the feature.