I did the update to both of mine and all went smoothly. Thanks for letting us know about the update! I've been using Roon and it doesn't tell me there's an update available like the Teac or Lumin apps would. I haven't had a chance to listen yet, other than to make sure they both still work.
There's an interesting menu addition called "sound" that gives you four options, including "Live", "Rich Harmonics", "Fast Attack", and Neutral. It'll be interesting to see what, if anything those do.