Imagine Dragons 2015 proves to be their year. It's only the second month of the year but the band has already released another album, dropped a new single, and announced a summer tour in more than 35 cities across the state.

The latest from Imagine Dragons this 2015 features their latest single "The Unknown" from their album, "Smoke + Mirrors." The second album will be out by Tuesday. As for the latest single dropped from the deluxe edition from the album, singer Dan Reynolds shared a brief history about the song.

"The Unknown is a song about questioning the future, and about my grandfather, who passed away years ago," says Reynolds in an interview with USA Today, adding, "He was one of the most humble, funny and hardworking men I've ever known."

"Smoke + Mirrors" will be released in two versions, the special edition and the deluxe edition. Imagine Dragon's 2015 album for the special edition features a different cover art plus four bonus tracks. Extra songs apart from "The Unknown" include "Release," "Second Chances," and "Thief." For those hoping to get a hands on the deluxe edition of "Smoke + Mirrors," the album will only be sold at Target.

Will Imagine Dragon's 2015 album manage to beat the record of their 2012 album? "Night Visions" managed to reach double-platinum, having sold more than 2 million copies. Given the great reviews The Washington Post had to say about "Smoke + Mirrors," fans of the band can expect great sales with the second album as well.

Aside from releasing another album this year, the group also made waves after their performance at the recently held Grammy awards. In addition, the group has announced their 39-city tour for summer. Imagine Dragons 2015 also sat down for a Facebook fan chat with USA Today. Check out what they had to say about their new album and their favorite tracks from it here.