Microsoft released the Windows 10 Anniversary Update on August 2. The massive refresh brought many new features and a lot of smaller tweaks as well. Redmond noted that the update was "rolling" meaning not everyone would see the 3.5 GB update on that Tuesday. Instead, devices that shipped with Windows 10 would get the update first, with older devices coming later.
Those numbers are reflected in the latest AdDuplex numbers for August. A staggering 77.2 percent of all PCs, tablets, and laptops are still on the 1511 branch (Threshold 2) from 2015 and have not taken the Anniversary Update just yet. Those running the Anniversary Update account for 16.2 percent of all PCs and two-in-ones according to AdDuplex with 0.6 percent on Redstone 2 as Insiders ? the next iteration due in 2017.
Full story from the WindowsCentral blog...