You may have already heard that, along with the rest of Windows Live wave 3, the next version of Windows Live Messenger (version 9.0) will have a new user interface.
After being tipped off by an unaffiliated yet trustworthy source who – naturally – doesn't want to be identified, Messenger Stuff can now reveal that the new interface will use the graphics effects available through WPF [Windows Presentation Foundation], where supported.
To put it simply, this finally means that we will see transparency effects in the various windows of the program, possibly similar to those already seen in Yahoo! Messenger for Vista. We are led to believe that the actual design has not changed much but the WPF effects have been integrated well in what is bound to be a popular new addition.