First all great job by the Roon team!
I absolutely love the way images are integrated and showed in 1.3.
I agree with the few adjustments proposed by Extracampine but the images feature is absolutely wonderful as it is.
Just one thing about PDF: I hoped to see the pdf opened inside Roon and integrated/show as the images instead of having it opened in external apps; having another app opened sort of breaks the Roon flow…
A final question about providing art (images/PDF): will it be possible in the future to have Roon searching and downloading art or it will show only art provided by users inside folders?