Windows Phone 7 to be launched in late August?

The latest rumour, via Neowin, is that Microsoft will be holding a launch event in Australia for Windows Phone 7 at the end of August.  On the other hand, a launch date does not necessarily mean devices will be made available, much like the launch of Windows Mobile 6.5 only saw devices arriving on market much later, which does lend some credence to an August date.