We still need translators' help to update and check the message: https://meta.wikimedia.org/w/index.php?title=Special:Translate&group=page-Tech%2FServer+switch&action=page&filter=&language= 

Nothing changed since my previous message, so already translated messages since last week are okay (thank you for your reactivity). 

But some languages are still not up to date regarding the time and date. Since the server switch is approaching, I updated them, using machine translation or my best guess, so these have to be verified. :)

Thank you again for your help.

Benoît