whatsapp found in WP Marketplace!

inwin

yes..but you must be using mango wp7.5 system..

WhatsApp now available [Mango]
Posted on Sat, 24 Sep 2011 10:37 am EDT by Richard Edmonds
Filed Under: Apps 

[WhatsApp Logo]

We published an article covering a potential release of WhatsApp for Windows Phone within 24 hours and here we are, announcing the availability. Be sure to check out the video review of the beta for WhatsApp. If you're not familiar with the name, it's a major cross-platform IM client.

One can download WhatsApp from the Marketplace, but keep in mind the app requires Mango.