Though we didn't get to see it Monday, evidently Windows Phone 7 will launch with support for Windws Live Messenger, something that was not at all to clear recently.
Interestingly, the program was written by their software partner Miyowa, who evidently builds on a regular basis Live Messenger clients for Microsoft, just not for their native OS.
Either this was a case of not enough time or perhaps Microsoft just recognized good talent when they see it. Whichever the case, for a lot of folks this should make them quite pleased knowing that they can still access their favorite IM app on the go.
No word on extended functionality, but we do get a teaser shot as seen above.