I'm disappointed it seems to have dropped lighthouse tracking with the previous Valve Index. Especially because with the Valve Knuckles controllers are my favorite with how they strap to your hand.
Linus says "just like" the valve knuckles a couple times, but who knows how they'll feel comparatively. I've personally never used the knuckles, but they seem like they'd have a different enough feel from these to maybe make a difference.
[0]: https://youtu.be/dU3ru09HTng?t=246 - timestampped @ controller section.
The controllers also have gyros, but from what I've read dead reckoning from gyros small enough for mobile devices really isn't reliable for extended periods.
There's also tools to calibrate the different tracking methods together, but that seems less than ideal.
Though it wouldn't help the controllers, perhaps the expansion port on the headset could be used for a lighthouse-compatible tracker? (One can dream...)