Microsoft officially announced Windows Live Messenger for the iPhone, version 1.01. The windows live messenger includes all the features which your expecting and it comes in english and french.
From the Official press release
” Windows Live Messenger for iPhone and iPod Touch is the best way to connect with the people that matter most and keep up with the things they are doing across the web. Use your iPhone to instant message your friends list, view and comment on your friends’ photos and status updates from Windows Live, Facebook, and MySpace, and at a glance, see what your Messenger friends are sharing from Flickr, YouTube, and many other social and photo sharing sites. Make sure to visit http://profile.live.com/Services today and setup Windows Live to bring in your social networks. Messenger is simply the best way to connect with your closest friends.
The Four Features -
Chat – Instant message with your WLM and Y! Messenger contacts on the go. You can even receive IM notifications when your app is closed so you never miss a message.
Social – sharing from social networks like Facebook, Flickr, MySpace and more
Photos – Upload photos right from your phone. Create albums, add captions, and let your friends and family comment on your photos.
Hotmail – Access your Hotmail account without leaving the app to read, reply to, and compose emails. Get email notifications within the application so you know when you have new messages.
This works on your iPhone and iPod Touch with iOS 3.0 or newer.
Download Windows Live Messenger from iTunes