NeoGAFs Kent Brockman
PlayStation has made a couple of upgrades to the PS5 DualSense controller that have flown under [...]
The discovery comes the way of YouTuber TronicsFix, who revealed in a tear-down video for the three new controllers that they have thicker springs in the triggers (0.3mm rather than 0.25mm), which means they should be more durable. This is an undeniable upgrade.
Another change involves the analog sticks, though right now it's unclear what the consequences of the change are. A big problem with the PS5 controller is stick drift, so it's possible this change somehow addresses this problem, but if it does, it's not clear how. Right now, the only thing that can be confirmed is the analog sticks are different. Below, you can check out this difference for yourself (the sticks on top are the new ones):