I've similar question on UIWebView.
I've tested UIWebView on iOS 13 Beta and it is working fine without any issue in our Application.
It seems, it is still not removed from iOS 13 SDK and will remove in future release.
Today app submissions have started showing this message
ITMS-90809: Deprecated API Usage - Apple will stop accepting submissions of apps that use UIWebView APIs . See https://developer.apple.com/documentation/uikit/uiwebview for more information.
so looks like people won't be able to submit apps that use UIWebView in the future despite is still available.
would be good to have an official deadline from Apple
At the minimum, it would be appreciated if Apple could give a rough timeline. Is this days, weeks, months, a year? We're actively working on removing any UIWebView usage but understanding the urgency would help us better plan this work.