Sony HAP-Z1ES: fresh firmware update today

My Sony updated itself today. The unit screen said ’view website for info’ but crickets on the official page. New firmware version is 0017050R. I did a chat session with support but of course they knew nada. 

Anyhoo, any owners have the skinny on this new firmware? I was so excited when I saw the notice I had to go tinkle.
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I just installed the new firmware, thanks for the tip!  I hope the remote app on my iPad still works properly.  The last time I did a firmware upgrade, there was an update to the remote app from Apple.
And another update today, this time to add Spotify.