Take look at this Thread https://devialetchat.com/Thread-Devialet-Upgrade
I did it to get Black Matte, as I am going for a second one. In my opinion the sound is very similar. What you gain is lower temperature, faster booting time, no or very little dropouts. Is it worth it if all works for you in stereo - definitely not. But if you have problems or plan to get another - you should seriously consider it. Also bear in mind taht the new ones are matte and not glossy.
I did it to get Black Matte, as I am going for a second one. In my opinion the sound is very similar. What you gain is lower temperature, faster booting time, no or very little dropouts. Is it worth it if all works for you in stereo - definitely not. But if you have problems or plan to get another - you should seriously consider it. Also bear in mind taht the new ones are matte and not glossy.