Every Routine now contains all three of these, every non-Routine only has $_.
There are no more grafts, no more real concept of "stash paths", and Foo::Bar really does define and use package Foo now. As per jnthn's design, non-packages can now replace packages in place, allowing class Foo::Bar; class Foo to work again. Things are generally simpler; starting support for CORE:: and friends.
…as semantics uncertain
… in a loop work