At the Elvis Insiders Conference Roger Semon played new samples of newly discovered SUN takes. He played footage of him and Ernst Jorgensen in the recording studio finding four versions of "Blue Moon" supposedly never heard by anybody in the world before.
Update August 16:
Due to a misunderstanding during a phone conversation with E.I.N.'s roving reporter in Memphis, the site mistakenly suggested that Roger Semon (from BMG / FTD) had played previously unheard outtakes of "Blue Moon". This was in fact not the case.