Microsoft disclosed its plans on September 4. The reason for the planned phase out, according to a company blog post is to consolidate the functionality of many of these individual apps into the coming Windows 10 Camera and Photo apps. The affected apps include Lumia Storyteller, Lumia Beamer, Photobeamer, Lumia Refocus, Lumia Panorama and Video Uploader.
Starting today, September 4, none of these apps will be available any longer from the Windows Phone Store. Users who already have them installed on their Windows Phones won't see them removed from their devices.
After October 30, 2015, online services and updates for Storyteller, Beamer, Photobeamer and Refocus will end. Panorama and Video Uploader will continue to work for those who have them, but also will no longer receive updates or support after October 30.
"Many of the Lumia features are already included in the Windows 10 Photos and Camera apps. While we can't promise that any particular feature is coming back, we're committed to providing a great photo and camera experience in Windows across devices, and we're listening to your feedback as we continue improving our apps," officials added in today's blog post.
Windows 10 Mobile, the operating system that is the successor to the Windows Phone 8.1 operating system, is still in development, and is being tested by Windows Insiders. Microsoft officials have not said when to expect Windows 10 Mobile or any of the new apps associated with it, like Windows 10 Photos and Windows 10 Camera, to be released to manufacturing and made generally available to new and existing Windows Phone users.
Sources have told me that Windows 10 Mobile is in testing with a number of mobile operators at this time. My contacts have been saying Microsoft's goal is to RTM Windows 10 Mobile this fall and to release it around the time that the Windows 10 "Threshold 2" release is available.