UPDATE - These pants are older. :' (
Update - I played with the contrast so we could get a good idea of the zipper pocket. They do look similar to the waistband of the Runder Unders.
2nd Update - Reader Lindsay says Runder Unders did come out in pique so there is a chance these might be older pants and not something new. :( But I'm crossing my fingers they are new.
Herringbone Wunder Under Pants