“Brit is working on the album. It's going incredibly well. Possibly off to the best start yet,” Leber tweeted.
“We have some amazing tracks. No release date set …”
The debut single on Spears’ previous album, 2008’s Circus, earned the mother-of-two a Grammy nomination.
The news follows the Toxic singer’s much-hyped appearance on the hit series Glee, her star turn helping the show nab 13.5 million viewers.
The 28-year-old took to Twitter to share her joy at being part of the award-winning series.
“I loved it! Thank you guys SO much for making this happen!” she posted.