I am sorry, but in another forum, I just saw a new firmware release of a Japanese LCD manufacturer.
Look at the release notes:

Improvements in this version:

New feature: Skype™
New feature: Twitter
New feature: Facebook
New feature: What's New
Media Remote (Software keyboard, Full / Simple Remote and Shake Track ID)
VA/O Remote Keyboard
Media Remote (text by voice)
USB HDD Recording
Audio Theatre Control Widget
WMV/WMA Codec for DLNA / USB
3D on IPTV and USB

And we are awaiting whether the next firmware will have DVB-T EPG...

Somehow I felt really strange that I just updated the firmware, and I saw no improvement...