Windows 10 for Desktop build 10166: What's new, changes, improvements, and gallery

As we get closer to the final release of Windows 10, Microsoft has just rolled out a new preview for PCs. This time was the turn of Windows 10 build 10166, and the company made it available through the Fast ring of updates. The new build also rolls out only days after the company released build 10162 and three weeks before the general availability, which will occur on July 29th.