Potentially big changes around Casting in Android 4.4.1. It looks like full screen casting is possible. At first I was thinking this was related to the screen recording that was introduced as a developer feature in ADB in KitKat, but there's a lot of references to MediaRouter, which is the class that Casting is based on. It also looks like all the Miracast stuff is being rolled into this. This could be just making the interface more consistent, but I'm not sure. Anyone else have ideas?
A key String in part of the diff: <!-- Title of the media route chooser dialog for selecting remote display routes. [CHAR LIMIT=40] --> <string name="media_route_chooser_title_for_remote_display">Cast screen to device</string>
Changes to support new screen cast settings screen. Fixed the Preference ordering code to consider the case where two preferences might have the same order. In that case, it falls back on the title to disambiguate. Previous behavior was undefined (and technically not stable).