Tony Parker writing on Swift’s blog:

When Swift began life as an open source project, we wanted to open not just the language itself, but the ecosystem around it. Foundation has been instrumental in the success of decades of software and has been an integral part of the Swift developer experience from the beginning, and we knew it had to be included in the open source offering.

Historically, Apple’s open source efforts have varied in just how open they are when it comes to community. On that topic, this is an uplifting bit of prose:

Open source projects are at their best when the community of users can participate and become a community of developers. A new, open contribution process will be available to enable all developers to contribute new API to Foundation.

This new Foundation project is slated to launch on GitHub in 2023.