unveils at Macworld 2009, the company is trying to make sure the presentation isn't going to be upstaged by concerns about
Even so, Apple says marketing chief Philip Schiller, not Jobs, will deliver the keynote address. The move comes as investors and Apple observers have become focused on Jobs' well-being.
The Apple founder is a pancreatic cancer survivor, and his dramatically slimmer appearance in recent months has raised concerns about how the company would fare without him and who would be qualified to take over in his absence.
Shares of Apple fell 5.8% to $89.90 in after-hours trading.
At the same time, Apple announced that the upcoming Macworld Expo in January will be its last appearance at the gathering. For its part, Apple says it's all part of an ongoing effort to reduce its participation in these showcase events.
"Apple is reaching more people in more ways than ever before, so like many companies, trade shows have become a very minor part of how Apple reaches its customers," the company said in a press release Tuesday.
Some Wall Street analysts expect Apple to use the event to launch a subnotebook or
to compete in one of the fastest-growing segments of the PC industry.