title: Can SwiftUI 2.0 new features introduced in WWDC 2020 run on iOS 13?
body: <p>SwiftUI has new features for Grid lists with lazy loading and PageView that I'm interested in implementing in my existing SwiftUI app compatible with iOS 13.</p>
  <p>Let's say I compile my app in Xcode 12 and add these new codes, will it be compatible with iOS 13 devices?
  Or do i have to keep my existing code, and use the new one only if the user is running iOS 14?</p>
  <p>Thank you</p>