I didn't see any note about this in the Release Notes.
By default, the SSH server is not accessible from the outside, but only on the LAN side.
If we enable access from the outside, we would like the ability to restrict which IP addresses can access the router via SSH. There is already a field for this in the Web Access section.
Yes by default SSH from WAN side is kept off for security reasons. The idea is to enable it when needed and turn it back off. This is primarly for debugging. We dont have plans to implementing this for specific IPs as of now.