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I believe, just as someone else stated earlier, that the main focus of this update was navigation. The calendar feature is also mainly meant for navigation, rather than for you to be able to view your calendar which by itself would be of very little use, given you have your phone right there.
I believe a future imminent release will focus on media player adding all those basic features such as shuffle, playlists, displaying album art from file (only resorting to the web when it is missing from the file), displaying song/artist info better (currently, the artist info gets truncated even though there is so much space around), and better overall cache management. As someone else pointed out, it may also be that a future release focuses on making an SDK available instead, and hence rely on third party apps to take care of the media player UI. Although, it still seems unlikely that Tesla will abandon the stock media player in its current state.
Lastly, I also believe that future updates are not going to take as long as six took.
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