Opposing to extensive reports on the Web, Microsoft CEO will not show up on stage at competitor Apple's yearly creator conference, Microsoft said.

The Ballmer report were encouraged by a research note from Wall Street forecaster Trip Chowdhry of Global Equities Research, who told investors that a seven-minute.

Stretch of Apple's future global Developers Conference keynote had been set aside for Ballmer to endorse Microsoft's Visual Studio 2010 developer tools suite to iPhone programmers.

Analysts wait for Jobs to talk about iPhone OS 4, the company's novel mobile operating system, and to reveal the next-generation iPhone. Microsoft nullifies the Ballmer rumor today in a tweet from its official Twitter account.

"Steve Ballmer not talking at Apple Dev Conf. Not emerge on Dancing with the Stars. Not riding in the Belmont. Just FYI," the tweet read.

The last time Apple and Microsoft director shared a stage was in 2007, when Jobs and then-Microsoft Chairperson Bill Gates were meeting together at the D: All Things Digital Conference.