Justin Timberlake released his latest single "T.K.O." after teasing the track via Instagram on Thursday. The audio stream video takes center stage on Justin Timberlake's website and is available for download on iTunes. "T.K.O." is just a taste of what fans can expect off Timberlake's upcoming album "The 20/20 Experience 2 of 2", set to release September 30.

Ahead of Justin Timberlake's new album release date, "The 20/20 Experience" part two leaked online. Both Torrentz.CD and MusicLeaks claim to have the album available for download now online. "The 20/20 Experience 2 of 2" is the singer/songwriter's fourth studio album. Through a series of promos and Instagram videos, JT has been enticing anxious fans with the second installment of his chart-topping album. Upon its release, both parts will reportedly be released as a compilation album titled "The 20/20 Experience: The Complete Experience".

Justin Timberlake Justin Timberlake teased fans via social media ahead of the "T.K.O." track reveal. This is one of his Instagram photos posted Thursday night before the single was available on his website and iTunes. (photo: Instagram)

Timberlake enlisted Timbaland, Jerome "J-Roc" Harmon and Rob Knox to collaborate with him on "The 20/20 Experience" albums. Part two will feature eleven songs JT enthusiasts haven't heard yet. The album tracklist and latest single "T.K.O" can be found below.

1. Gimme What I Don't Know (I Want)

2. True Blood

3. Cabaret (feat. Drake)

4. TKO

5. Take Back the Night

6. Murder (feat. Jay-Z)

7. Drink You Away

8. You Got It On

9. Amnesia

10. Only When I Walk Away

11. Not a Bad Thing

12. Blindness

13. Electric Lady