Discussion The Evolution Discussion category is for general discussion of the evolution of the Swift language. Proposal Reviews This category is for posting Swift Evolution proposals for review and feedback. Pitches The Pitches category is an area for pitching ideas for evolution of the Swift language prior to a formal review. Announcements This category is for announcements of Swift evolution proposal reviews and results, as well as other administrative announcements. Creation of new topics in this category is by site admins and Swift Core Team members only, although anyone can reply to topics once created.