No, but they're releasing new frameworks with Swift-only APIs. They're not "jettisoning" Objective-C, and I'm sure teams at Apple will continue to write stuff in Obj-C for years to come. It'll likely never disappear entirely. But that number will continue to shrink.
That's only because WidgetKit uses SwiftUI. Granted, if more and more APIs become reliant on preexisting Swift-only APIs like SwiftUI or Core ML, that certainly leaves Objective-C out of the cutting edge.
