In older versions, the things that you could do were gated by story progress. At some point, the team adjusted that metric so that anal could be done at lover love and trust values. ...which is something that I've never experienced first hand.
A very long-term "maybe", according to the devs.
Coming in a matter of months, version 1.1 specifically.
Check older posts in this thread, Patreon, and Discord for previews of Kitty.
King_In_Yellow usually posts the previews here.