Apple introduced SwiftUI at WWDC this year. The framework is still developing and is subject to drastic API changes from beta to beta. It's also iOS 13 only. I don't mind dropping support for all versions but the latest release, but I expect the framework to continue to evolve and stay plagued with performance problems throughout the year. I wouldn't suggest shipping a SwiftUI app until next year, but we can play around with the framework for now.
Apple introduced SwiftUI at WWDC this year. The framework is still developing and is subject to drastic API changes from beta to beta. It's also iOS 13 only. I don't mind dropping support for all versions but the latest release, but I expect the framework to continue to evolve and stay plagued with performance problems throughout the year. I wouldn't suggest shipping a SwiftUI app until next year, but we can play around with the framework for now.