Currently crate releases appear immediately on crates.io. Users who don't have a lockfile get the release immediately. Users with lockfiles get it whenever they decide to update. That's generally good enough, but sometimes I'd like to have more control: As a crate author, sometimes I have bigger releases that could have bugs or compatibility issues. I publish -pre releases, but in practice very few users test them, so I hear about bugs when I make a "stable" release. In popular crates this br...
