WhatApp for Windows Phone "no longer published"?

Whats up with this? I am a little worried since i just sent my Lumia for service a week ago and now when i get it back i won't be able to reinstall WhatsApp.

http://www.windowsphone.com/en-us/store/app/whatsapp/218a0ebb-1585-4c7e-a9ec-054cf4569a79