CDs are now actually also joining vinyls in being revived for physical merch purposes. They're no longer needed, but if you want them they are available for purchase.
Not that it'll happen, or at least I haven't heard of it, but I'd love for MiniDiscs to also make a comeback (not that they ever were that popular), and see new releases in that format. It's my favorite one, a nice blend of CDs and compact cassettes (no worries about scratches thanks to the protective shell, even when you carelessly throw the discs in your pockets).
After years of digital only I started buying CDs and books again. I am much more selective though. Just buy what I will listen to many times or for artist support.
Bought a total of 3 CDs in two years. Movies are more difficult, as I can't stand watching most the second time. Got some Ghibli classics.