Yes - with the exception of Indonesia and Mexico, where non-transactional notifications are now supported. To be eligible, businesses must have Indonesia or Mexico as the country setting in Business Manager. There is no change to the message template creation process in Business Manager or via the API. Businesses should choose one of the eleven categories for templates when submitting a non-transactional template.
Non-transactional templates can leverage the alert update category. Expect this feature to be rolled out into more regions in 2021.