Rather casually in a blog post Vodafone Australia revealed that, amongst its pending Android OS updates, they also have an update ready to roll for the HTC 7 Trophy, just waiting for Microsoft to push the button.
In the status update they way â€œTesting for Windows Phone Mango firmware update has been completed and approved. Awaiting Deployment from Microsoft.â€
Seems that September 15th date may not be that far fetched after all.
Thanks Dawookie for the tip.