OpenZFS on OS X

I haven't been able to find a lot of information on what exactly the upcoming on disk format change needed for the new encryption functionality will entail, but I assume it'll mean a need to rebuild a pool? Or will there be some kind of in-place upgrade? I was planning on doing mid sized upgrade on a few systems once native encryption became available, but it sounds like 1.7.0 is now relegated mostly to testing and kicking the tires on 10.13 and we should wait until 1.7.1 or .2 or whatever for older systems or converting a ton of data and encrypting it natively. Is that a reasonable reading? Thanks for all the hard work on this.

Actually, I think he promises that zfs send | zfs recv should be sufficient to fix the problem. But I personally will wait for the PR commit to come in before I make crypted datasets for my data.