Haven't heard anything lately...but I haven't been to many parts stores until this weekend either

As of last weekend no signs were up for any drags other than the ASDRA ones last weekend.
I should also clarify the ones in Mexico are not in the dunes or "south of buttercup" unless you take into account that all of Mexico is basically "south of buttercup"

They are held at sand dragstrips in San Luis, Mexicalli and other places from what I've been told.
Anytime I see the signs for them I'll be sure to post here - but I've been too broke to be buying parts lately so I may have missed some