The wait is over for Christina Aguilera fans, as the pop star announced today (Mar. 25) that she'll release "Bionic" -- her long-anticipated fourth studio album and the first since 2006's "Back to Basics" -- on June 8.

"Not Myself Tonight," the lead single off "Bionic," will premiere on Aguilera's official Web site on Mar. 30, while an exclusive preview of the song will debut this Friday.

Recorded in her home studio, "Bionic" features "electronic and organic elements with subject matter ranging from playful to introspective," Aguilera said in a statement. "It is something I don't think anyone will expect...I am so excited for my fans to hear the new sound."

In addition, Aguilera confirmed long-rumored collaborations with Sia, Le Tigre, Christopher "Tricky Stewart," Hill & Switch and Ladytron, and a ballad entitled "Lift Me Up" written  by Linda Perry, who also penned "Back to Basics" singles "Hurt" and "Candyman" and Aguilera's 2002 hit, "Beautiful."

Aguilera's "Back to Basics" album has sold 1,694,000 copies, according to Nielsen SoundScan. Her 2008-released greatest hits set, "Keeps Getting Better: A Decade of Hits," has sold 338,000.

Aguilera also recently wrapped filming on "Burlesque," which co-stars fellow pop diva Cher and is slated for a fall 2010 release.