Chrome notebooks in late June, early July

According to Neowin, Chrome notebooks are arriving this Summer. This information is not new and it was widely known that some Chrome event would happen during Google’s I/O developer conference being held May 10-11. This is what's new:

Google plans to make the notebooks available for $10-$20 a month per user, and will provide hardware refreshes as they are released as part of the package, and will replace faulty hardware for the life of the subscription. On top of this, Google will make the devices available for a one time payment as a normal retailer would, but is likely to not distribute the devices directly. Instead, the company will distribute them in a fashion similar to the way Android is distributed.

I'm curious about the details around this allegedly distribution model or "ecosystem" around Chrome notebooks.