As reported justplanenews.com:

US Airways Milestone
Being Reached in DFW

Traveling to Dallas-Fort Worth on the 19th? You’ll be going to a new terminal, as East and West operations move from Terminal B to a new home in Terminal E. All departures for both East and West will operate as scheduled out of our current locations in Terminal B on July 18, but flights that RON on the night of July 18 will arrive at Terminal E using gates 35-38.
Please advise customers and non-revs traveling to DFW of this exciting and important milestone. Customers without checked luggage may take SkyLink back to Terminal B to retrieve cars parked at that terminal, and additional terminal link shuttle vans will be on call at Terminal E to transport customers with checked luggage back to Terminal B should the need arise. Effective July 19, US Airways will operate only from Terminal E

-SOAC