Update to WebExtension, but not mandatory

Hello *,

I converted my extension to a WebExtension, and I would like to provide it via AMO to users who use Firefox 57+. But I would like it’s optional to users who use the current version of Firefox. For the new extension is still in a beta stage.

Is it possible?

If you set the “strict_min_version” to 57.0 then only users with FF57 will get their addon updated but user of older FF would not have the option to upgrade.