I just tried updating to 10 on a test site (on AWS Lightsail) and I got:
Update failed: The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.
In the php log:
PHP Warning: chmod(): Operation not permitted in /opt/bitnami/wordpress/wp-admin/includes/class-wp-filesystem-direct.php on line 173
(I got five of those) I don’t have time to look into this right now. I generally don’t update plugins when the first of a major version comes up. But the bottom line is that I wasn’t able to try it.
