OK, forgive me if this has been asked an answered, but I too qualified for the $15 upgrade. I have the upgrade assistant on my screen, but before I pull the trigger, one question: does the download just go ahead and install, or do I have the option of installing it later, or perhaps, never? I've played with the Preview enough to know I can live with the changes, but I'd like the option of installing when and if I'm ready. Thanks for any info you all can provide.
NOTE: Just found this on Microsoft's "Upgrade to Windows 8" page"
"You can run Upgrade Assistant without purchasing or installing Windows 8. "
Does this mean you can purchase, download and not install?