While Microsoft has yet to confirm this news, Windows Central has received a number of tips stating that some older Windows Phone Lumia devices are getting the promised over-the-air update to Windows 10 Mobile.
The reports come from emails from locations like India, the UK, Belgium and other countries. In addition, the tips are being posted in our forums as well. Again, Microsoft has yet to make an official announcement on this release, but it does appear that the update is indeed being pushed out to some Lumia phones.
Thanks to everyone for the tips!