A team I was on decided against Manifold precisely because we wanted to keep up with Java's twice-yearly version updates, and we didn't want a bespoke compiler plugin to lock us to an older version.
I think Manifold is extremely cool, and it does look like they're keeping up with the latest -- but the deep compiler magic it relies on really makes me nervous.
I think Manifold is extremely cool, and it does look like they're keeping up with the latest -- but the deep compiler magic it relies on really makes me nervous.