"I love all my friends and supporters at Columbia. I will miss them as I start this new relationship," Simpson, 25, tells Billboard magazine.
Referring to Epic's new president Charlie Walk, who formerly oversaw marketing at Columbia, as the one she trusts most "to present my new music to the world," Simpson says: "Charlie Walk was my first hero at Columbia. He believed in me before I really even got to meet the rest of the company."
In This Skin sold 2.9 million copies in the United States, according to Nielsen SoundScan. The new album reportedly is due by the end of the year, though an R&B single is due any time now, says Billboard.
Both Columbia and Epic are part of the conglomerate Sony Music.