Kylie Minogue unveils new single 'Time Bomb' - listen

Kylie Minogue's new single 'Time Bomb' will debut officially online later today (May 25).

The popstar has launched a countdown timer on her official website in the run-up to the track's unveiling, and a 90-second preview of the track has since emerged online.

Minogue was spotted on Old Compton Street in Soho, London last month filming a new music video. The popstar was pictured on the back of a motorbike, wearing a leather jacket with a heart on the front.

Minogue recently announced plans to release a Best Of collection in the UK on June 4 and in the US on June 19.

The compilation includes hits such as 'Can't Get You Out Of My Head', 'Spinning Around' and 'Wow', but does not currently feature 'Time Bomb'.

Singer turned actress Kylie Minogue arriving at the premiere of Holy Motors at the 65th International Cannes Film Festival

The 43-year-old has been at the Cannes Film Festival this week to promote her new movie Holy Motors.

She told reporters that she was keen to go "back to basics" for her first big-screen performance since 2001's Moulin Rouge!.

"Basically I banned my entire entourage from coming with me," she explained. "I stripped myself of being Kylie and wanted to go back to being as basic as possible. To pretty much be a blank canvas."

Minogue is due to perform on this weekend's The Voice UK results show.

Watch Kylie Minogue perform 'Cherry Bomb' on her recent 'Anti Tour' below: