Hot Reload for XAML allows you to update your app UI on Web (via WebAssembly), iOS and Android from Visual Studio while the app is running resulting in your greater productivity.
XAML Hot Reload was announced at UnoConf 2019 in Montreal by Uno Platform CTO Jerome Laban. Watch it here via the UnoConf livestream: https://youtu.be/tYk2us6W6Gg?t=7162