To me this is all about as clear as mud:https://lists.ubuntu.com/archives/ubunt ... 35445.html
But it sounds like a future that no longer has dual-boot and multi-boot. And it sounds like users will be mostly using the software they get on the hardware they buy.
Let's say this one more time:It will be possible to disable Secure Boot or add your own keys.
Granted, this is an extra hassle, but it will be
an option, at least on x86-64 systems. (ARM is another matter; Microsoft's requirements for ARM work to further lock down the platform.)
The real threat, IMHO, is in the long term. Microsoft might change their Windows certification requirements for a future version of Windows. With Fedora and Ubuntu coming out with different approaches to the immediate problem, there's also the risk of fragmentation in the Linux community, which could hinder efforts to prevent future badness. For the moment, though, Secure Boot is, at worst, a minor inconvenience to individuals.
My concern is that, unless Win8 is a complete flop, OEM's are not, and likely will not, be boldly launching out into the Linux universe by placing Linux on their computers.
Apparently a lot of OEMs are none too happy with Microsoft's decision to dive into the hardware arena with their Surface tablet. This might give savvy marketing people for Red Hat, Ubuntu, SUSE, Android, and others a window of opportunity to get Linux onto more tablets, and perhaps other computers as well.