Microsoft is gearing up for the Windows 10 Mobile Anniversary Update and while it didn't co-launch with the PC and Xbox One updates it is not far behind at all. Earlier this week, a now deleted tweet from Microsoft's official Lumia India Twitter account claimed August 9th for the update.
Although Twitter can be unreliable for such information (and that tweet is now gone), I can confirm that the August 9 date is accurate. Nevertheless, there is more nuance required.
Full story from the WindowsCentral blog...