Not that I have an audience like Robert Scoble but it's no sweat, So here goes…
Windows Live Messenger launches today, 19th / early 20th of June.
Here are a couple of links where you can get it from…
http://get.live.com/ - Currently takes you to http://ideas.live.com/ on Internet Explorer, whereas in Firefox shows you the incomplete page, with no text.
http://messenger.live.com/ - Redirects to http://get.live.com/messenger/overview. Funny thing though; this is the only overview page among all other Live services which is turning up empty. (At the time of writing.)
And when it is released the direct link will hopefully be http://g.msn.com/8MEEN_US/EN/INSTALL_MSN_MESSENGER_DL.EXE.
UPDATE: The final version does not have Yahoo!® Messenger Interop Capability. Looks like I'm gonna have to wait a few more weeks.