This sounds to me like a free (but optional) upgrade that restores many features to Windows 8 many have have complained about.
Windows 8 will be required to use it.
Unless I missed something obvious, it sorta looks that way to me.
But then I am left wondering why not just offer it as a optional through Windows Update.
I don't know, but I guess I can't just wrap my head around MS just making a free OS. And if they did, then ad support would be likely. Sorry, Id rather pay than deal with that mess.
Big reason I actually buy most of my software because most (Not all) are free because of ads and it drives me nuts.