This specific update expanded the "Playgrounds" concept from a learning tool into a legitimate lightweight development environment. Downloading swift playgrounds version 4.1 - Apple Community
Swift Playgrounds 4.1, released on , marked a pivotal shift for Apple's coding app by transforming it from a learning tool into a functional, lightweight IDE for both iPad and Mac. Swift Playgrounds 4.1 Download
iPadOS 15.2 or later was generally the baseline for version 4.x features. Release Notes - Swift Playground - Apple Developer This specific update expanded the "Playgrounds" concept from