I was told after parachains one of the next steps is parathreads, where can I find information about parathreads estimated release date in Kusama?

PS: I read the following in Reddit: -Well parathread cannot send state transition proofs for Relay Chain validators for now I think. So yes, they exists, because before becoming a parachain, the previous stage is being a parathread, but they cannot do anything-

Does this mean they exist but they are not functional yet? When can we expect fully functional parathreads in Kusama?

I was told that after parachains, one of the next steps is parathreads, where can I find information about parathreads estimated release date on Kusama?

PS: I read the following on Reddit:

Well parathread cannot send state transition proofs for Relay Chain validators for now I think. So yes, they exists, because before becoming a parachain, the previous stage is being a parathread, but they cannot do anything

Does this mean they exist but they are not functional yet? When can we expect fully functional parathreads on Kusama?