Other newsletters I recommend:
SwiftLee Weekly (by Antoine van der Lee)
Sent every Tuesday with a curated list of Swift, iOS, and Xcode tips & tricks.
SwiftUI Weekly (by Majid Jabrayilov)
Sent every Monday with a list of curated SwiftUl articles & videos.
Swift Evolution (by Cihat Gündüz)
Sent every month with an overview of exciting developments on Swift