The iPhone 3GS wasn’t the only thing Apple displayed at WWDC yesterday. Attendees were also treated to “a 5×4 matrix of Cinema Display monitors, adorned with thousands iPhone app icons.” Continue reading to see what happens when someone purchases an app.

The twist? Whenever someone purchases the app, it pulsates. Apparently it’s not quite real-time, but the effect is extremely slick.

[via Gizmodo]