If you need early access to the next version of Android Studio, you do not need to replace the existing stable version. You can set a preview of Android Studio next to the stable version and work with the same application projects in both.
After downloading preview Android Studio
Unzip the zip file.
1) Rename the resulting folder to something unique, for example, "Android Studio Preview".
2) Move it to a permanent location, for example, next to the existing Android Studio (install in C: \ Program Files \ Android).
4) Inside C: \ Program Files \ Android \ Android Studio Preview \ bin \, run studio64.exe (or if you are on a 32-bit machine, run studio.exe).
5) For the preview version to be available in your Start menu, right-click studio64.exe and click "Pin to Start Menu".
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