Android Studio 3.1 Canary 9 is now available in the Canary and Dev channels, and includes general bug fixes.
Important: On January 22, we released and then rolled back a version of Android Studio 3.1 Canary 9 due to a bug in the update mechanism. If you already accepted that version of Canary 9, you should still update to this latest version.
If you already have an Android Studio build on the Canary or Dev channel, you can get the update by clicking Help > Check for Update (or Android Studio > Check for Updates on Mac). Otherwise, you can download here.