Microsoft has launched Windows Phone 8.1 for Windows phone 8 users in 2014. According to the support policy for Windows Phone 8.1 life cycle , Microsoft will make updates available for Windows Phone 8.1 Operating System, including security updates, for a minimum of 3 years. So what this means is that Microsoft may end its mainstream support for their OS next month on July 11, 2017. But if Microsoft wants they can increase the support for WP 8.1. But if Microsoft Decides not continue supporting the WP 8.1 then Microsoft will no longer be providing security updates for any device running after July 11, 2017.
Here’s what the official page says regarding this:
Microsoft will make updates available for the Operating System, including security updates, for a minimum of 36 months after the lifecycle start date. These updates which will be offered will be incremental which means that each update will be built on the update that preceded it. Customers will be required to install each update in order which they released it to remain supported for the future updates. It also re-iterates that the distribution of these incremental updates can be controlled by the mobile operator or the phone manufacturer from which you purchased your phone.
Lets’ see what Microsoft decides for their older version of Phone OS.