Ok i just tried out the new messenger so here are what i think compared to the 8.5:

-the installer is DAMN BIG. why dont they just sparate it out from the other programs.

-When a chatbox is open, you cant see the recipients email address on the top like what we get on the 8.5

-The taskbar icon doesnt blink in orange when you receive a msg.

So far have been using one day. Lets see what more can find out about this thing.

Oh btw theres a msger live extension compatible for this windows messenger 9 for the guy who was asking this on the above

thanks for the tips. but i like tabbed chatting