I have seen a graph showing how the features would be implemented through 2025 here.
Somewhere in between Q1 and Q2 (April - June) they have planned to have a softlaunch (I imagine a preview / testing environment).
If you are interested in testing it right now, the team of Toten Studio have a penpot instance with some features available. You can ask here
That’s right! We’re pretty close to launching the first version of Penpot Design Tokens, which we intend to improve by releasing more capabilities shortly after.