In what seems to be a first for Apple, the company's online store has remained active ahead of the WWDC 2016 keynote. In all past events, Apple did take the webstore offline a few hours ahead of them. Therefore, either there will be no new hardware introduced during the keynote or the store will go down a bit later, but still ahead of the event.
Apple Store DOES NOT go offline ahead of today’s keynote, but Apple Public Beta Program does