Microsoft is pushing out a couple of cumulative updates to Windows 10 production machines running Anniversary Update. One of the updates, KB3176934, was released to Insiders on the Preview ring last week, while KB3176936 appears to be new.
So far, we don't have any information on what the KB3176936 offers, but here's what Microsoft said about KB3176934:
We have released Cumulative Update (KB3176934) to Windows 10 Insider Preview Build 14393 on PCs which will bring the build number to 14393.82. This Cumulative Update includes the same fixes as KB3176932 but with an additional fix: Improved download size optimization of updates.
As soon as we know more, we'll let you know. In the meantime, if you're running a production version of Windows 10 Anniversary Update, then go to Settings > Update & security and hit that big Check for Updates button.