BlackBerry 10 upgrades have stalled out

The upgrade cycle for newer BlackBerry 10 OS versions has stalled out. The use of 10.3.X has remained steady at approximately 90% of usage.
2016Aug-Pixelated-BB10OSVersions
2016Aug-StuffINeed-BB10OSVersions

This data was collected by BlackBerry World for downloads of the free strategy game Pixelated and the free checklist app Stuff I Need. Data shown on the chart is from the beginning of August 2015 through the end of August 2016.