Windows 10 Mobile's official debut as an over-the-air update for older Windows Phones is apparently getting closer. Wireless carrier Vodafone Australia has posted word on its support page that it has actually completed its testing of the Windows 10 Mobile over-the-air update for four older Lumia models,

The phones themselves are the Lumia 640, the Lumia 640 XL, the Lumia 730 and the Lumia 930. As we previously reported, a fifth phone, the Lumia 630, was also in testing for the same upgrade but Vodafone has since removed it from its support page. That same page shows that the carrier is now "awaiting confirmation of rollout schedule", which likely means Microsoft has to sign off on when the update can begin.

While a few overseas carriers have claimed they have begun rolling out Windows 10 Mobile to some devices, there's been no independent confirmation of those reports. It would appear that Microsoft has not yet approved the OS for its over-the-air debut, at least in a wide release, but we expect that to happen literally at any time.

Source: Vodafone Australia