Regarding KB3192762, the file hash on the x64 is the same as the previous, so it hasn't changed. I didn't download the x86 earlier so I can't compare it though..
Looks like there's another Windows 10 cumulative update out, KB3197954 this time. EDIT: Wait wasn't that one already available, why is it re-downloading?
Here also, installed an uptodate .351 version and it's now downloading KB3197954 again. Now on 2 systems.
Guessing they updated it to "v2" or some such as happened with updates on some of the previous OS's occasionally, for Windows 10 though they usually just correct stuff via newer cumulative updates particularly for insider updates before whenever the next general release cumulative update is made available.