The new desktop oriented WhatsApp has now been released as a companion web app for Chrome (not a stand-alone).
WhatsApp web version mirrors your conversations and messages from your mobile device, and requires you to scan a QR code on your computer via your phone in order to get started. What this means is that if your phone isn’t working (dead, off, etc), WhatsApp won’t work for you on the desktop. Although it would be nice if the experience wasn’t so tied to your phone, this is still a very welcome addition for WhatsApp fans looking to use their computer’s full-sized keyboards to send messages faster than ever.
To get started, you’ll want to head on over to WhatsApp’s website, where you will be given instructions that will help you get the desktop experience working correctly. You need to make sure that you are running the latest version of WhatsApp on your phone.