At first I've tried to update Android Studio 4.1 Canary 8 to Canary 9 as usual through update dialog. At the first start Canary 9 have thrown error:
Missing essential plugin:
org.jetbrains.android
Please reinstall Android Studio from scratch.
So I downloaded Canary 9 distribution from official source (https://developer.android.com/studio/preview). Deleted Canary 8 catalog and extracted tar.gz with Canary 9. Then launched android-studio/bin/studio.sh with the same error.
I renamed ~/.AndroidStudioPreview4.1 catalog and started studio once more. Same error.
Now I rolled back to Canary 8 from my backup. Any help how to move from Canary 8 to 9?