It was reported earlier this week that Spears was planning to release new music in the next few weeks.
Producer Rodney Jerkins said: "Britney fans are gonna be so happy in a few weeks."
Leber has since denied the claim via a series of posts on his official Twitter page.
He wrote: "No new music news right now... Wish people wouldn't mislead you guys with BS info. Not cool! (sic).
"PS - The guys that ARE working on Brit's next album ARE NOT talking about it... Brit has a new mag cover & spread coming out in the next month or so which is going to be SICK! Will let Brit reveal the details herself."
It is rumoured that Spears will make a cameo appearance in an episode of Glee dedicated to her.