I went to look at the screenshots, saw armarok 1.4.10, got excited thinking they'd brought it back, and then got sad when I realized the screenshot was from 2011.
They've recently pushed out a new release with the code base ported to Qt/Plasma 5 and are now going for Qt/Plasma 6.
EDIT: here's the latest changelog: https://wiki.trinitydesktop.org/Changelog_For_R14.1.3#amarok