I see dirt work in the parking lot of Walmart. Are they expanding the service department? or is something else going to be built?

I know they are expanding the building to the east, towards I-35.

I was told by a grocery order pic up employee at that store that they are redoing that part for the new customer grocery parking pic up order area

Probably similar to the expansion in Mustang, as I've heard thats what it's for.