I hope this means they're fixing the lag with Wireless CarPlay. Casting audio to it (e.g. PlexAmp) results in at least 1 full second delay when using play/pause, skipping tracks; watching any video on the screen (while parked, of course) is unusable if the audio is through wCP.
(Though I guess on the other hand, maybe it'll look synced if they're both streamed)
(Though I guess on the other hand, maybe it'll look synced if they're both streamed)