The countdown is on!
Britney Talks "Make Me" Video, B9, Can't Remember Meeting Taylor Swift: Listen
A PDF titled Supplemental Information of the Consolidated Financial Results for the First Quarter Ended June 30, 2016 hosted on Sony's server says Britney's album will drop September 1, which is odd considering it's a Thursday. Albums are typically released world-wide on Fridays.
The tentative album title is still TBD, so it's possible September 1 is just a placeholder for some time next month.