More like “What hasn’t changed ?”
Get a look at the full list here
The highlights ?
Automatic updating – save yourself some effort keeping secure
Security Advisor – checks to see if DSM settings are optimal
Service by interface – you can control which of the two nics services use
New backup destinations Azure, SFR S3 and hicloud S3
Those are just a few that are of interest – make sure you read through the list and the package changes !!