If you are keen to get your hands on the latest Android 4.3, but your phone’s manufacturer/carrier is not ready to push the update to your phone yet, you can try it out on your desktop. You doesn’t have to install the Android SDK or emulator. As long as you have VirtualBox in your computer, you can run Android 4.3 in a virtual machine.

We have previously shown you how to do so with Android 4.0 (Ice Cream Sandwich), but the build back then was not working well and the WiFi module is not working. This latest Android 4.3 build is more complete and a lot of things just work out of the box, even when you run it as a LiveCD.

Full article here:
The Complete Guide to Run Android 4.3 in VirtualBox (Make Tech Easier)
Similar articles:
How to install Android on Windows, Mac, and Linux computers [Guide] (dotTech)
Install Android OS on Computer (Windows, Mac, Linux) (Android Galaxy)