After noticing album art was added to the collection browser, and then noticing it got removed from the artist entry - and reading in the commit digest:
Andrew Turner committed changes in /trunk/extragear/multimedia/amarok/src:
  Revert to the previous Collection Browser look of displaying covers in the given icon spaces, for albums only. This reverts the following commits: 616254 618301 619976 , of which two are by me and one by jefferai.
  Diffs: 1, 2, 3  Revision 622151

i'd like to ask Andrew why he did remove those album pictures behind the artist? i thought they look good...

We thought it looked really horrible Especially since the images were not aligned.

Hey could you give a screenie, that might have looked good

Have a look at the amarok weekly newletter
http://ljubomir.simin.googlepages.com/awnissue4