Update: Steve Jobs' resignation letter has since been published on Apple's website, with the firm also offering its first official response to the news.

According to a press release published by the Wall Street Journal, Apple CEO Steve Jobs has resigned from his position at the company, instructing the board to appoint current COO Tim Cook as his successor.

The letter, reportedly penned by Jobs himself and addressed to the firm's board and the "Apple community", suggests his much publicised health problems may be the cause, with Jobs stating he's "no longer able to meet his duties" at the firm.

No job for Jobs

"I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple's CEO, I would be the first to let you know. Unfortunately, that day has come," Jobs says in the letter.

"I hereby resign as CEO of Apple. I would like to serve, if the Board sees fit, as Chairman of the Board, director and Apple employee.

"As far as my successor goes, I strongly recommend that we execute our succession plan and name Tim Cook as CEO of Apple.

"I believe Apple’s brightest and most innovative days are ahead of it. And I look forward to watching and contributing to its success in a new role.

"I have made some of the best friends of my life at Apple, and I thank you all for the many years of being able to work alongside you."

[source: Wall Street Journal]