From now on, the on-device installer does not create a dedicated SSH user anymore.
The original idea was to ensure that the SSH user always has a stronger password than just a numeric PIN. However, Sxmo and Plasma Mobile already don't require that anymore, and Phosh will follow some time soon. But more importantly, the dedicated SSH user creates unnecessary complexity for the user, both during the installation process and when actually using it.
It's much simpler to always disable SSH and have people follow our guide in the wiki regarding how to enable SSH with the regular user, and how to copy the SSH key and disable password auth.
The wiki article explains under Troubleshooting how to enable SSH for the regular user if the installation was done with an older version.