Good video, very much worth watching despite the length. New UI will look something like this:
with an option for a more classic look.
Looks like an enourmous UX improvement too, and a rewrite to QT and eliminating a lot of technical debt will make development faster.
In the video, Tantacrul shows how it matches with the aesthetic of the rest of Muse's icons...but it kind of doesn't.
He (correctly) insisted on keeping the headphone iconography, but the rest of Muse's icons are letters. UltimateGuitar's imp ears plus arrow makes a G one, then the others are abstract geometric T for Tonebridge, a weird S for MuseScore, a really bad circle/diagonal line for an A for audio.com and two verticle lines and a circle for an H for MuseHub, whatever the hell that is. And then Audacity's headphones. Going for stylistic resemblance...for the logos of websites, phone apps and desktop apps that probably won't be seen together. Plus in a lot of places MuseScore's Mu with fermata mark is still in use.