I have a feeling Apple will launch another watch in September together with the new iPhone. There is no way Apple will keep these watches in the market for long. The battery hardly last a full day properly.
ON the other hand Motorola is about to announce a new watch next month which can last 2 and a half days usage. Of course with round face.
It is only a feeling because the current apple watch wont be able to keep up with Android Wear soon to be releasing for iOS and new android watches releasing with 2 to 3 days of usage at half the price of the Apple watch.