It wasn't a big change (just an extra line in the MIME types mapping), but it's a nice feature:

rev 632 can now play DVD images on your Linux box (not on the tablets, because DVD decoding is too heavy for them).
An image file of a video DVD can be created like this:
The disc images are treated as videos and get thumbnail previews as well.
mplayer must have the appropriate extensions installed for decoding DVDs, though.