Any way, I tested out the new firmware but there is a HUGE BUG so far:

1) Turn on the PBO will prompt to FORMAT the hard-drive each time eventhought the HD was formated with the PBO (original firmware).
Please fix this in final release ASAP because we don't want to lost our stuff already on the HD. The wife/kid(s) might select "OK" by mistake and bye bye our media files.

Other things I notice (so far):
1) Turn on and shut down is much faster.
2) Menus are somewhat more responsive.

3) S/PDIF-LPCM/RAW issue is still not resolve - still require to switch between mode when playing music and video.
4) AAC multi-channels is still not work with S/PDIF.
5) Date/Time is still not save.