The PR was approved literally a few minutes ago and that should conclude phase 1 with all the foundations for the new "segmented" VDEVs with 64GB tiles, drives would be divided and populated with those tiles allowing to have mixed sized drives in ZFS pools.

Based on the previous features and builds, I'd estimate that we're probably going to see this being GA with the next major update of OpenZFS 2.5. Perhaps early next year? Let's see.

Here is the PR for those of you interested and curious enough to see what it actually takes to open source new things: https://github.com/openzfs/zfs/pull/17567

And this is the next big one, phase 2, where the different size drive parity calculations logic and balancing will be implemented: https://github.com/openzfs/zfs/pull/18406

Lastly, for those unfamiliar with ZFS AnyRaid, here is a nice presentation Klarna guys did on this project and what it actually means for us: https://youtu.be/zdIGhDiZWU4

PS: non-native English speaker here, not word checked and fuck…