The update it took place with absolutely no problem. A little bit weird, I received an email latter from my host with a message asking me for an update to WordPress 5.1:
''The following script updates are available:
To upgrade these scripts go to your Control Panel -> Softaculous -> Installations.
There you will be able to update the scripts.’’
Of course I could unsubscribe from such emails but I would ask if this behaviour is normal. [on dashboard there are no notifications for an update, everything is fine, I’m running normally on ClassicPress rc2, without glitches and I don’t encounter any kind of problems on update] .