The band released the single "Warcry", on 2 April 2017 alongside a lyric video. The second single of the album "Passage" was released on 25 April, alongside an accompanying music video. On 11 October, their third single "Frequency" was released, alongside an accompanying music video containing footage from their Ark tour. Coinciding with the release of Ark, In Hearts Wake joined forces with Tangaroa Blue for 'We Are Waterborne: An In Hearts Wake Initiative' leading a series of waterway clean-ups in Melbourne, Sydney, Brisbane and in their hometown of Byron Bay. People who participated received a free 'We Are Waterborne Volunteer' t-shirt. In Hearts Wake went on a 5-date tour in July to promote Ark, with supporting acts; While She Sleeps, Crossfaith, and Polaris. After the release of the deluxe edition of Ark, the band went on a 3-date all ages tour to promote it in June. Supporting them were Justice for the Damned, Thornhill, and The Beautiful Monument.
Writing and composition
Jake Taylor on describing the album and said: The album's genre has been described as metalcore.
Critical reception
The album received mixed reviews from critics. Heavy magazine in a positive review said: "its variation into other avenues that their musical counterparts have embraced does not entirely fit with 's character when the band ignites their impact is felt like a flood from an uncontrollable tidal surge." Wall of Sound gave the album an average review saying: "Ark, with its powerful first half that draws your attention to the band and the direction they could be heading, sadly drops the ball with the final act despite a few bangers that at times felt somewhat out of place surrounded by their neighbouring songs around them." KillYourStereo gave it a negative review saying: "I don't care for this record, and neither should you. Why? Because this album already exists. It's called Divination. It's called Earthwalker. It's called Skydancer. So save your cash-monies and save the ever-dissipating currency that is your time." Chris Tippell from Ghost Cult gave the album an 8-out-of-10 and said: "Not quite unseating others from their throne, In Hearts Wake have still shown that they are not to be overlooked, and in future they should be definitely included in the same bracket as many of their widely hailed peers." In a modest review, Sophie Maughan from Metal Hammer said: " aren't afraid to deviate from the musical blueprint they've consolidated across three albums."
