Anyone who uses PDFKit to edit PDF files knows that Sierra has broken it such that it is almost beyond use. The new API is barely documented and doesn't seem to work - I can't create annotations using the non-deprecated API at all. I've seen a thread here that suggests Apple have said at WWDC that the mass deprecation of PDFAnotation subclasses was a mistake.
As a developer who is still struggling to decide how to move forward under these circumstances I'd like Apple to clarify where they are going with PDFKit - was the mass deprecation a mistake? Will it be rolled-back? If not, when will the documentation/functionality be updated to enable us to actually use this framework with some confidence?