Adele fuelled speculation that a new album is imminent as she returned to Twitter after a nine-month break.
The Hello singer, 33, made her appearance during the Facebook outage, tweeting “Hiya babes” in response to a tweet from the official Twitter account.
It comes as she changed her Instagram and Twitter profile pictures to a turquoise pattern with her bio now just showing a link to her website where fans are asked to sign up for more information.
Last week billboards around the world appeared mysteriously displaying the number 30.
Adele famously names her records after milestone years that they were written.
