The segment is a short clip of music - in Adele's unmistakable tones - with lyrics fading in and out over a black background. The lyrics are:

"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."

You can listen/watch the snippet below, or head to Twitter and look over the million other similar clips.

OH MY GOD ADELE'S NEW SONG pic.twitter.com/eTM1dCYAS7

— zach (@sighzach) October 18, 2015

Back in March Amazon Italy may have let the cat out of the bag with a pre-order link, but nothing concrete about any new release has officially emerged.

Rumour has it that Columbia/XL Recordings will unveil 25 will drop this autumn, and will be produced with help from Danger Mouse, Max Martin, Ryan Tedder, and written with Tobias Jesso Jr, Sia, and possibly Damon Albarn.

Any new release will follow the record-breaking 21, which was released in 2011. Since then Adele's kept further music plans under lock and key, except for her Oscar-winning Bond theme "Skyfall", of course.

Adele :)

— OneRepublic (@OneRepublic) October 18, 2015