The league planned to announce the invitations Thursday, Texas-El Paso athletic director Bob Stull told the Las Cruces Sun-News.
Stull said a conference call with other WAC athletic directors on Tuesday yielded recommendations for adding New Mexico State and Utah State.
New Mexico State athletic director Brian Faison and WAC commissioner Karl Benson would neither confirm nor deny that an announcement regarding league membership would be made.
But Utah State President Kermit D. Hall told the Deseret Morning News in Salt Lake City that a news conference at the school had been scheduled for Thursday afternoon.
On Monday, the WAC identified eight schools as possible replacements for Rice, Tulsa and Southern Methodist, which will be leaving the league to join Conference USA.