You do want to remind your early adopters that they're dealing with things that are not completely baked. There are ways to do that, and there are other ways.
Here's us:
Disclaimer
This is a preliminary document and may be changed substantially prior to final commercial release of the software described herein.
Here's them:
Not for the faint of heart
Canary is designed for developers and early adopters, and can sometimes break down completely.
Nightly updates
Canary changes almost every day.