Updated to 1.13P with no issues. Stuff I've noticed...
1, Browsing is so much faster over network (not UPNP)
2, ID3 tags are working more often than not though quite often I get random chinese characters which various players on Vista don't show me, its all English.
3, Shared folders for "guest" now under Vista now work! I guess Windows 7 also.
4, Logging in to Vista even with the correct details doesn't work, this was the work around for sharing not working so not a big deal now.
5, MOV files that are MP4 now work (from my camera, don't think they worked before)
6, You can view photos under movie option, saves switching modes.
7, Photo has 'Ken Burns effect'
Ken Burns Effect - Wikipedia, the free encyclopedia
Odd things....
mpeg1 and 2 don't play from my NAS over the network but using a UPNP server e.g PMS, with no transcoding just file streaming they play fine.
Some of these might have been in update 1.11 bar the top 3.