Adele has broken her silence. (Probably.)

The "Someone Like You" singer sent speculation about her upcoming album, perhaps still called "25," into overdrive Sunday night when a mysterious 30-second ad aired during "The X Factor" in the United Kingdom featuring a piano-driven ballad sung by someone who sounds an awful lot like Adele.

On a black screen, the lyrics appear: "Hello, it's me. I was wondering if after all these years you'd like to meet to go over everything. They say that time's supposed to heal ya. But I ain't done much healing..." There was no other explanation. No picture of Adele. No release date announced.

It all adds to the mystery surrounding Adele's follow-up to the decade's biggest album so far "21," a Grammy-winning sensation that was recently certified diamond for selling 10 million copies. Since the promotion of "21," which arrived in 2011 featuring chart-toppers "Rolling in the Deep" and "Rumour Has It," Adele has pretty much stayed out of the spotlight, releasing only the James Bond theme "Skyfall," which won her an Oscar.

Adele generated speculation last year that her album called "25" would be released last November, but that was quickly scrubbed and it seems she had still been working on it this year.

One of the year's breakout artists Tobias Jesso Jr. has reportedly contributed a song, while Danger Mouse and Ryan Tedder have been working on new material with her. However, it's still not clear what songs made the final cut.

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Billboard has reported that "25" is due for a November release, but Team Adele has offered no confirmation. There has also been no confirmation that Sunday night's ad came from Adele, though her famous voice and delivery is hard to imitate that well.

Of course, rumour has it that it is indeed her.