Apple had kept the market in mystery by not revealing the details of ‘the upcoming cloud service offering’,since the announcement of unveiling Lion, iOS 5, iCloud in the press release.

iCloud was almost a throwaway line in the press release, said Michael Gartenberg, an analyst for technology research company Gartner. But that's getting the most scrutiny because we don't know anything about it.

Apple’s iCloud has been anticipated to have a network that can take some processing and traffic burdens from wireless carriers' networks.

Unlike its usual practice, Apple this time has revealed in advance about the launches and will provide further details at an event in San Fransisco on Monday .

Apple’s Chief Executive Steve Jobs has taken a medical leave to preside over the opening of the company's annual conference for software developers.

According to multiple reports, iCloud would allow for streaming of music hosted on Apple servers in the Internet cloud to various devices -- from computers to smartphones to touchscreen tablets.

Apple’s web-hosted music which is coming weeks after Amazon and Google came up with their cloud music offering, is predicted to give tough competition to RIM, Google, Amazon and Microsoft, all of which have struggled to compete with iTunes in its current form.