Don't hold your breath. Apple is and always has been closed and controlling, their MO is not to give up any control until they absolutely have to in order to remain relevant in the discipline in question. They will always try to own the game before giving in and joining the community, so no, they don't give a rat's *** about open development. Not to mention they make bank by charging confiscatory rates to partake in their mandatory distribution means (i.e. Apple Store) -- hence the lawsuits, and by all rights there should be an antitrust action. Best thing you can do is to build killer PWA apps with features that will be by default Android exclusives, only if there are enough of these will Apple's selfishness motivate them to do the right thing.