Google is trying to improve de design of his wearables, in order to catch much more Android enthusiast’s with the objective to make his smartwatch the standard. So, there is an other huge market that the company prentends to achive, the iPhone users.
Actually, this is a great oportunity for the iPhone users, since they don’t have a lot of choices in the wearable market, like Android users.
Android smartwathces compete directly with the Apple Watch and Google has a huge advantage, that’s the experience, because launch they SO first than Apple.
There isn’t no official document stating cooperation between Apple and Google, but the fact is that an Android users was able to user his Motorola Moto 360 receive a SMS from an iPhone. The expectations is that other Google Apps works too.
Pebble has proved that isn’t impossible to work with iOS and Android, although there are some limitations. Let’s wait and see how this subject evolves.