The 26-year-old singer remained vague on when her new material will be released, but said that it has been a challenge to outdo her previous work, reported Digital Spy.
"I can't give you any hints of when it will drop. It's going to be great, that's all I'm going to tell you, and I'm excited about it," she said.
A rumoured tracklisting for Rihanna's new album emerged online last month, featuring collaborations with Drake and Nicki Minaj.