Pearl Jam has a big announcement coming.
The band tweeted a Vine of a countdown clock. The countdown starts at 6 days, 23 hours, 59 minutes, and 45 seconds. On Pearl Jam's website, the countdown is continuing. There is a message that says, "This area will be unlocked once the clock reaches 000:00:00:00."
The announcement is probably either about that new music or perhaps a big tour in support of the upcoming new music.
The last Pearl Jam album was Backspacer. It was released in 2009.