yesterday i got my new, old testing phone, so i gave it a try. And it worked. Dont know, if somebody really want not to encrypt the home, whatever.
[root@XperiaXA2 defaultuser]# df -hT | grep home
/dev/mapper/sailfish-home ext4 17.3G 50.5M 17.1G 0% /home
[root@XperiaXA2 defaultuser]# blkid | grep home
/dev/mapper/sailfish-home: LABEL=“home” UUID=“12345…” TYPE=“ext4”
After new flashing the image, boot immediately in recovery mode!
$ telnet 10.42.66.66
(3) shell
-# mount /dev/mapper/sailfish-root /mnt
-# rm /mnt/var/lib/sailfish-device-encryption/encrypt-home
-# exit
reboot