Album art is back in iOS 8.3
As noted album art is fixed in 8.3. There is a marginal difference in quality but really annoys me that half the artwork is blacked out.
We must not be talking about the same thing. I was referring to album art when using Pandora. I had full album art with 8.2 and still do with 8.3. The exception here is that if Pandora is running, and I press "Now Playing" on the CarPlay interface, a simplified version of Pandora is displayed with no album art (again, no change between 8.2 & 8.3).
If/when Pandora is added to CarPlay, I would prefer to have the version with album art, rather than the simplified view.
All of the above is with lightning to usb1... I don't use bluetooth audio which may be different.