Hello first of all as Yuri said theirs not any official release out there for whatsapp, but people are using it so here is a Walk through - Hope I get succeed in explaining you for downloading Whatsapp on PC.
So bro, you wish to Download Whatsapp right, before that you might be knowing still let me tell you once again - WHatsapp can be used on any one device say if you are using it on PC you cant use it on your Cell Phone.... Ahh that dosent mean that you cant Switch!!!!
Each time you switch from PC to Cell phone vice versa verification is required...
Ok here we go... How much I know there are total 2 options available
- Bluestacks 2) Wassup
if you ask me then I like bluestacks method and yes still i use it on my PC, just because my office have a carrier network issue so atleast whatsapp makes me to be connected.
For Bluestacks its pretty Easy - Download it form the official site and Start installing same like how we install any other Software.
Once done - Open it you will see Search option in front of the Application - Type "Whatsapp" and again start following the instruction... and you will end up with Whatsapp on your PC.
Another Way is wassup.. Basically its not a Android Emulator!!! So all you need is Download and Install it Do the verification and Start using IT...
Why i prefer Bluestacks over wassup just because Bluestacks get updated regularly...
This is all what i know and for sure it will work as it works for me, if you still get into trouble just for reference check this post written on Downoad Whatsapp for PC Completely explained, on how to download and install whatsapp on PC.
Hope now you might be able to Download Whatsapp, if you still get into trouble get in touch with me and I will try to help you out in installing and configuring Whatsapp on your PC. thats it friend Now just get start to give it a try.....