* Playability and stability for Blu-ray discs and DVD disc
New for 2.3
* Playability and stability
New for 2.2
* DTS-HD Playback Enhanced
* Playability and stability
New for 2.1
* Playability and stability
New for 2.0
* Dolby TrueHD and DTS-HD High Resolution Audio are supported. A new decoder is incorporated to support the latest high quality multi-channel surround sound formats.
* Functions of EZ Sync(North America) or VIErA Link(Europe/UK, Oceania) are enhanced. You can now seamlessly operate multiple connected components with one remote control.
* Playability and stability
New for 1.4
* Picture Quality via HDMI
* Playability and stability
* Response of skipping operations
* Support of the dics recorded with Panasonic AVCHD Camcorders
New for 1.2
* Picture Quality of disc menus
* Playability and stability
I spoke to Panny customer service in Aus only a couple of days ago and the guy said that there would never be an upgrade to Master Audio because the hardware in the DMP-BD's can't handle it.
I,ve gone through a thousand boxes of tissues since!