MS has updated its KB3035583 in an effort to get folks to upgrade to W10. This is a patch which you might have ‘hidden’ in the past. So, their ‘updating’ that patch might well cause it to reappear. As far as I know, you can re-hide it with no problems, but according to sources, this patch has a very clear “decline” option, as opposed to earlier
This sort of brings up some other stuff: If you make a ‘last minute’ decision to upgrade to W10, you might not succeed, due to servers getting swamped. So, if you’re really considering it, make your decision very soon. The free upgrade expires on July 29th.
Regarding the “Anniversary Update”: Don’t expect it to happen necessarily on August second. It will be rolled out gradually. Which brings up a weird scenario for those folks: Two major OS upgrade/updates over a very short period of time…which will make MS’s servers especially “busy”.
“Plan Ahead” as the famous IBM sign says…MS could have planned this better by extending the free period by a week or three…and offering the “Anniversary Update” version to W10 late comers thus halving the data download time for them.” – gHacks
…a smart PR move.
Anyway…just so you know.
Source:
http://www.ghacks.net/2016/07/20/microsofts-windows-10-anniversary-update-timing-off/?_m=3n%2e0038%2e1891%2ehj0ao01hy5%2e1yw7