There's a bit more info in this one about exactly what was compromised though. While I can understand the abundance of caution in resetting passwords despite only hashes and salts being lost, it is odd that they would "[presume] the attackers may be able to decrypt the passwords," assuming they're using strong encryption.
Here's a good blog post how and why this is problematic: https://www.troyhunt.com/our-password-hashing-has-no-clothes...
Further information: https://status.uservoice.com/incidents/fb7ml8b3nphf
Apparently I'm part of the "0.001%" that was affected in the breach.