On Saturday September 25th, after months of hard work, our Windows Phone client went live in the Marketplace!
WhatsApp Messenger for Windows Phone is available to those running version 7.5 (Mango) release on their device. We are sorry if you don't have Windows Phone 7.5 yet, but very soon all of the current Windows Phone 7.0 devices will get upgraded to 7.5 and you will be able to download and enjoy our app.
Also, Windows Phone client release brings our total supported mobile platforms to SIX! Just to recap, they are:
iPhone (OS 3.1 or newer)
Android (OS 2.1 or newer)
BlackBerry (OS 4.5 or newer)
Nokia Symbian S60 (3rd Edition Feature Pack 1 or newer)