Persistent text formatting
Now when you change your font, text size or color for your IM messages, we’ll save your settings between sessions. So if you like to IM in font size 14 using red letters in Arial Bold, we’ll remember!

Voice improvements
We updated the user interface for the voice feature to make the buttons more clear and added a new voice visualization called “Color Burst”. Plus there’s an updated incoming call notification that appears front and center when a call comes in.

No webcam yet, but we’re making that clear
A lot of our feedback has been from users asking for webcam support or users that look for the webcam feature but can’t find it in the product. Currently, we don’t have webcam support in Yahoo! Messenger for Vista but to shorten our users’ search for it, we added a webcam menu item. Those not in-the-know will get a message telling them that webcam support is coming soon.