Hello, Swift community.
The review of SE-0466: Control default actor isolation inference ran from March 5th through March 19th, 2025.
Feedback on the review was generally positive, albeit with some apprehension about whether adding a new "mode" was really warranted. The Language Steering Group had broadly similar feelings, but ultimately decided that smoothing the progressive disclosure curve for Swift 6 requires that we round off this corner of the language. Doug's comment on the review thread goes into more detail and represents our viewpoint very well, so I will not rehash it in great detail here. Accordingly SE-0466 has been accepted.
Thank you all for taking the time to read the proposal, ask questions, and leave feedback; these contributions are a vital part of ensuring the quality of the language.
Steve Canon
Review Manager