We'll see what the community response is, and once we're confident this is what everyone wants we'll merge it into master (PR is already up[1]).

While there isn't an official build at the moment, the code PR includes a prebuilt version of the current branch, and we have a playground repository to experiment with it.

[1] https://github.com/yarnpkg/yarn/pull/6382

[2] https://github.com/yarnpkg/pnp-sample-app