Source: http://www.avforums.com/forums/lcd-televisions/873792-samsungs-2009-lineup.html
New Features for 2009
There is a new support menu. It has the user manual, sound/ picture diagnostics, DTV signal meter, HD connections which it lists as "How to get the best performance from your TV.". In the support menu is also a firmware upgrade option and will display the TV's current firmware version. The new style 16:9 colour user manual is in Adobe Flash format and is very easy to navigate via the remote
For 100hz (120hz US) Motion Plus there is now a custom setting. This has two options:
1. Blur Reduction: Adjusts the blur reduction level in video sources.
2. Judder Reduction: Adjusts the judder reduction level in video sources with film signals.
Motion Plus 'Low' has been renamed to 'Clear' and 'High' to 'Smooth'.
Black Adjust → Off/ Low/ Medium/ High has been renamed to Black Tone → Off / Dark / Darker / Darkest.
Optical Link Ready. Optical passthough?
BD Wisesync. Talks to other Blu-ray/ HTX devices to optimise HD playback
Natural Picture mode joins Standard, Dynamic and Movie. Natural Selects the picture for optimum and eye-comfortable display. BD Wise picture mode will also be avalible if connected to a Samsung Blu-Ray/ DVD BD-Wise compatible device.
Film Mode. The TV can be set to automatically sense and process film signals from all sources and adjust the picture for optimum quality.
Divx Certified. Although the A756/ A856/ A956 supported playing Divx media files, but weren't officially certified as Divx devices.
Divx Video On Demand
Now supports playback of movies in the following formats upto 1080p: MKV/ WMV/ VOB/ AVI/ TS/ 3GP/ MPG/ ASF
Now supports the following video codecs:
XviD
DivX 3.11/4.x/5.1/6.0/
H.264 BP/MP/HP
MPEG-1
MPEG-2
MPEG-4 SP/ASP
Motion JPEG
Windows Media Video V9
VC1
2 x USB2.0 Ports. Along with the much improved media capabilites, Some of the TV's features a pair of USB2.0 ports on the side. Now you can have the optional wireless adaptor plugged in one USB slot, while using the other for connecting to storage device drives. Both USB ports are on the side on these models, and the headphone socket been moved round the back.
Internet@TV. A feature rich replacement for InfoLive, uses Yahoo Widgets from Samsung's partnership with Yahoo.