So far games haven't really taken advantage of it, except to gain two more buttons (it can sense which side you're pressing down on). But the built-in keyboard uses it, for example, which makes typing a breeze.

The potential is there, it's just up to developers to actually use it. Keep in mind that the PS4 didn't even have a single truly good exclusive game until Bloodborne came out recently. It's taking this new generation of consoles a long time to really kick off.