This rehearsal concert was filmed before the "real thing", Elvis: Aloha from Hawaii. These two shows cost $2,500,000, more than any TV special ever in that time.
This was the rehearsal concert of January 14 aired "Elvis: Aloha from Hawaii" (1973) (TV). Both productions are the only ones ever produced by Elvis Presley himself.
This concert was released full re-edited in Elvis: Aloha from Hawaii Deluxe Edition DVD box set.