5 Seconds of Summer is posting cryptic messages on social media and fans are reacting.

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5 Seconds of Summer can certainly look back on 2014 with tons of smiles since they've managed to achieve such great success, but it seems as though these Aussies have something up their sleeves for the fans before the year closes out.

On Facebook Wednesday, the band shared a 19-second video clip in black and white that shows guitars, stage lights, amps, a 5SOS dressing room sign and more before abruptly ending with, "COMING SOON". The caption on the video even shares a cryptic message that says, "COMING SOON..... 21.11.2014".

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"21.11.2014" is Friday, but currently it is still unknown as to what is coming.

Drummer Ashton Irwin tweeted Thursday the link to the video mentioned above and mentioned just how great it'll be. Check out his full tweet below.

Another short black and white video was shared on the official 5SOS Twitter Thursday, showing a set list and the boys getting ready to take the stage with the same vague text.

Luke Hemmings tweeted earlier with a smiling emoji, "Doing some exciting stuff today".

Fans have been guessing on Facebook and Twitter what is "coming soon." Check out some of the 5SOS fans' reactions below.

Many on Facebook believe the band will be announcing a concert DVD and the same response is on Twitter.

Tags: 5 seconds of summer