The former One Direction star announced the title and cover art for his forthcoming track on Friday, confirming April 7 as the release date.
Underneath a picture of the artwork, Styles simply wrote: “SIGN.OF.THE.TIMES // 7.APRIL.17 //.”
In a strange coincidence, late music icon Prince released his career-changing record Sign O’ The Times on exactly the same day, three decades ago.
Styles, 23, will make his first ever solo television appearance on an episode of Saturday Night Live next month.
Announced on Tuesday, a post on SNL’s official Twitter account read: “Excited to announce @jimmyfallon and @Harry_Styles will be in Studio 8H on April 15! #FallonStylesSNL.”
Styles shocked fans with a surprise single teaser during the advert break on The Voice on Saturday night, revealing that the release date.
The singer has stayed tight-lipped about his solo material, despite signing to major label Colombia last year.
Music industry site HITS Daily Double recently described Styles’ new music as being a cross between ‘David Bowie and Queen’.
“In marked contrast to One Direction’s production by committee, Styles has crafted a set that recalls the regal high-water mark of ’70s British rock, Bowie and Queen in particular,” a report read.
Styles is also launching his acting career this year with a role in Christopher Nolan's Dunkirk.