Sources "familiar with the company's thinking" are saying that since Apple is actually open expanding their products beyond the iOS and the OS X platforms, even if it is to its erstwhile rival when it comes to platforms.
The Apple Music for Android was one big step towards this as it was the firts truly consumer app (the other two are more services apps) that they offeres to those who don't have Apple devices.
Google also seems to be moving towards targetting those on the "other side" as they announced a messaging app called Allo, both for Android and iOS devices. It is integrated with your mobile number and allows the users to use messages, emojis, stickers, mini games, and even an Incognito mode where your conversation have end-to-end encryption. Now the question is, will Apple bite the bullet and open up iMessage to the rest of the world.
WWDC is happening this Monday, June 13, so we'll know if there will indeed be an iMessage for Android users will actually be interested to have it on their devices, when there are so many other messaging apps already out there.
via androidcommunity