I'm using the latest stable build 2.5.5721 and I no longer see results for iTunes Album Art when I 'Search Internet for Picture'
Also it'd be nice to be able to choose from 1200x1200 (1200x1200bb-85.jpg) and the sometimes higher res (100000x100000-999.jpg) or even have both results visible.
You can see the higher res album art results here
http://bendodson.com/code/itunes-artwork-finder/