Beyonce seems more than ready to carve out another masterpiece with her next project. There's speculation that the superstar was currently working in New York with The Cataracs (and possibly Australian singer, Sia). The Cataracs couldn't contain their excitement about working with a huge talent. The indie hip-hop group took to twitter to deliver the great news (that was later taken down).
Their mention of Sia seem to indicate that she might be in on the recording process. This picture was posted:
Coincidentally, Sia also tweeted about working in New York with a big star (likely to be the same "big B" person). The singer has actually expressed interest in working with Beyonce in the past. Take a look at her last few tweets which seem to be expressing the same enthusiasm as The Cataracs.
Not familiar with her work, check out her single 'Titanium'