If you are already using a 1.4 Preview/Beta build, you can use the builtin Update mechanism to upgrade directly to 1.4 Beta 4.

If you are using 1.3.1, you can also update via a patch, but

, you may not want to do that;

p

atch-updating to this new version will replace your existing stable installation with a preview version. Instead, you can download a separate installation of 1.4 from the Android Studio 1.4 Beta page

. You can keep 1.3.2 and 1.4 Beta 4 installed side by side; they use separate settings and cache directories.