Rank: Guru
Rating: 93%, 13 votes
I can only guess that what is meant is a system upgrade. And yes, as far as I know, HP Pavilions bought after the 26th of june (or smthing like that...) with Vista are mostly entitled to a free or reduced cost upgrade to Windows 7.
For more info please refer to:
http://www.hp.com/united-states/consumer/windows7-upgrade/index.html?jumpid=reg_R1002_USEN