From now, when you are creating an organization you will be able to transfer your owned apps to your new organization.
You can transfer apps at the third step of “Create new Organization” popup, after adding “Name of Organization”, “Billing email” and “Billing info”.
By clicking on a toggle you will start the transfer process.
Note: At this point you can’t change the Service credential user - this is important if you are the admin of the given repository on Github, Bitbucket or Gitlab and the app needs your credentials to work on Bitrise. If you want to change the Service credential user of an app, you can do it on its Team tab.
For an existing organization you can still transfer an app on it’s Team tab.