There is a Supercharger under construction near the junction of I-40 and AR-23. As of August 14, a section of the parking lot for the Workman’s Travel Center was fenced off near the east side of the building, and some concrete formwork and buried conduit was present. Several crates of Tesla equipment were within the fenced area. I did not take any pictures or hang around long enough to estimate the number of stalls as there was at least one person working on the site and I did not want to bother them.
The location is 35.5238 N, 93.8636 W.