Incarnate : In an interview with Wikimetal, Jesse Leach announced that the band will start Demoing new material "In the Coming Months". On February 25, 2015 the band released 40 second snippet of a New Single titled "Loyalty". The track appears on the Catch the Throne: The Mixtape Volume 2 to promote the HBO TV Series Game of Thrones. The Mixtape also features appearances from Various other Metal and Rap Acts such as Anthrax and Snopp Dogg. On March 30, 2015, Mike D'Antonio stated that the band had completed Demoing material for It's next Studio Album. Killswitch Engage took part in a Summer Tour in July 2015, opening up for Rise Against with support from letlive. On December 10, 2015 the band premiered a New Song entitled "Strength Of The Mind" on Revolver. On December 16, 2015 It was revealed that the band's upcoming Seventh Album, to be released on March 11, 2016, is called Incarnate. 

Killswitch Engage primarily play Metalcore, combining sounds from extreme Metal and Hardcore. Like some modern Metalcore Bands, Killswitch Engage vocally combine Singing, Screaming Vocals and Growls in their music. Killswitch Engage's music mixes "Crushing" Riffs, Double Bass Drum Patterns, Power Chords, Dual-Guitar Harmonies, Often punctuated with pinch harmonic squeals in their music and breakdowns that one can expect from the Metalcore genre. Their music is influenced by Gothenburg Metal Scene, New York Hardcore and Thrash Metal. In 2009, MTV, while naming "The Greatest Metal Bands of All Time", said that Killswitch Engage have been "Called One of the Founders of Metalcore". Jason D.Taylor of Allmusic said Alive Or Just Breathing is "A pure metal album that seemingly has ignored any fashionable trend and instead relies solely on skill and expertise to sculpt some of the meatiest heavy metal since the glory days of Metallica and Slayer". Both current Vocalist Jesse Leach and Former Vocalist Howard Jones write lyrics that are considered positive. Jesse Leach stated on (Set This) World Ablaze, that the lyrics contain "Unity, Positivity, (and) Love". On the lyrical themes of Killswitch Engage, Ultimate Guitar reviewer Amy Sciarretto Notes: "Howard Jones has come into his own since 2004's The End Of Heartache, and He continues to hit the notes, wax about relationship, faith-issues and other relatable issue (Sic) on this second Self-Titled effort". On Killswitch Engage's 2009 Self-Titled album, Howard Jones states the change in lyrical themes: "I've got enough to draw on to write some stuff that can be dark. Maybe there's still a hint of positivity in it, but there are some songs on there that are not positive at all".