We've just released Scala Plugin 1.3! If you haven't been following the recent EAP, here's what this new update has to offer:
Variables from the outer scopes are visible in the Variables tab now: there is no need to evaluate expressions or step through frames anymore.
Step into action now works in a more natural way for lambda expressions, methods implemented in traits, default arguments, specialization methods, etc.
Support for Monocle
Unused imports inspections are now aware about the implicit parameters in the implicit conversions for extension method