Are you planning to make versions for 1.18 snapshots?

No, I'm only planning to support full releases.

I'm already working on the update, the primary effort is checking that my assumptions on vanilla code are still valid (and that's something I want to do myself). Fabric release will probably happen some time over the next week, depending on how busy I am with other things.

What about now, considering 1.18 will be released in a few days?