Just installed 2.8 this weekend and really liked it.
Upgraded to 2.9.beta1 today.
In the 2.8 version, when I set the cover art for and album, it would show up in the list with the other albums from that band.
After the upgrade to 2.9.beta1, the cover art is only displayed when I browse the album itself. Smells like a bug

I hope I made myself clear

Regards,
Svenni