This seems significant

But if you’re more into building PCs than tweaking desktop settings, one new Anniversary Update feature will be an absolute treasure. Windows 10 now allows you to tie your operating system license to your Microsoft account, rather than the specific hardware inside, using a new tool dubbed “Activation Troubleshooter.” That means diehard system tinkerers should be able to reactivate their license easily, with fewer pesky calls to Microsoft support, in the event of a motherboard and processor upgrade. That sound you just heard was a legion of hardcore DIY PC geeks sighing in collective ecstasy.

I like this:
The Windows installation screen will contain more information than before, for example, and you’ll be able to comment in the Feedback Hub and tell Windows not to install updates during specific hours. 

Glyn Barnes
This seems significant

But if you’re more into building PCs than tweaking desktop settings, one new Anniversary Update feature will be an absolute treasure. Windows 10 now allows you to tie your operating system license to your Microsoft account, rather than the specific hardware inside, using a new tool dubbed “Activation Troubleshooter.” That means diehard system tinkerers should be able to reactivate their license easily, with fewer pesky calls to Microsoft support, in the event of a motherboard and processor upgrade. That sound you just heard was a legion of hardcore DIY PC geeks sighing in collective ecstasy.

 
So the license continues with a change in motherboard?  Very significant...

There are some new features in this that I really like. Setting up hours "not to update" and being able to add drives and CPU without it showing up as a new computer are huge.

I'm deferring the update for now on all my computers. I'm not too happy with the way MS is doing things right now. I was one of the biggest supporters of 10 but now I'm really questioning their actions (and in some cases, lack of actions) and overreaching what they should be focusing on as an OS. I'm to the point of even switching my personal machine to Linux because MS has been seemingly half-assing everything they have done for 10, removing features, making it impossible to shut things off such as Cortana without having to edit the registry... it's an absolute mess.

Did the upgrade with only a couple bumps discovered so far.
 
Ilok doesn't start without manual start.
 
Classic Shell is toasted, but the dev has quickly responded to the problem. Ver 4.3.0 works fine with the anniversary update. Cheap bastard here, so sticking with the freebie now that it works again.
 
http://www.classicshell.net/
 
John
 

im an insider and have used it some month now. not on the daw tho. but it is better and better than the old. it keeps getting better and better...
 
i know. im a fanboy...

Quick question : is the update being rolled out progressivly as per the W10 installation last year ?

Not showing up on my PC yet.

Cheers,
J