On December 21, 2013, Fedor Buzilevich uploaded a demo of a new song titled "Holy Blood" to his official Facebook profile.

[3] On January 24, 2014, Buzilevich updated the band's official website, revealing the title of their upcoming album to be Day of Vengeance.

[4] On February 18, the band's official website was further updated, revealing a complete lineup change occurred, with the exception of Buzilevich.

He also unveiled the cover art of the album on his Facebook profile, and made two more songs available for streaming on Holy Blood's official website, titled "Steel Sword" and "I Believe in God".

The rest is still a secret.On February 18, the cover art was discreetly revealed as a thumbnail after the official website's discography section was updated.