“Yahoo! is a top global brand whose vision is to be the center of people’s online lives, and Carol Bartz is leading the development of Yahoo!’s approach to delivering personally relevant, meaningful Internet experiences. We welcome Carol Bartz to the 2010 CES keynote stage to talk about what’s next for Yahoo! and the industry.”

– Consumer Electronics Association president and CEO Gary Shapiro, Oct. 13, 2009

Now this is odd: Yahoo (YHOO) CEO Carol Bartz has canceled plans to deliver a keynote at the Consumer Electronics Show in Las Vegas in January. This not a month after the Consumer Electronics Association boasted of her participation in a press release.

The reason for the cancellation: An alleged scheduling conflict. Said CEA spokesperson Jason Oxman: “Carol Bartz informed us late last week that her schedule has changed and she will no longer be able to deliver the speech at the 2010 International CES that Yahoo and CES had announced some weeks ago.”

It’s worth noting that prior to Oxman’s remark, which was posted to the comments of Tech Trader Daily, no official announcement of Bartz’s withdrawal was made. Indeed, the CEA press release issued yesterday announcing the addition of Qualcomm (QCOM) CEO Paul Jacobs to the CES keynote roster made no mention of Bartz at all. Moreover, her bio appears to have simply disappeared from the CES site.

As I said, odd.

Such a drastic expansion of Apple-related show floor space will no doubt inspire speculation that the Mac maker plans to put in an appearance at CES. But that seems unlikely given the company’s reasons for bowing out of Macworld. “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 at the time. “The increasing popularity of Apple’s Retail Stores, which more than 3.5 million people visit every week, and the Apple.com website enable Apple to directly reach more than a hundred million customers around the world in innovative new ways.”

In any event, this is unfortunate news for Macworld and IDG, the publishing company that runs it. Without Steve Jobs or even Apple (AAPL) to help it upstage CES as Macworld has done in some years past, the event has far less to offer attendees and presenters than before. Certainly, no one is going to be decamping from Vegas in the middle of CES this year to hit Macworld. There’s no reason to. And with CES ramping up its efforts to woo Apple accessory manufacturers and retailers, well, things aren’t looking too good for Macworld, are they?

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• Apple Investors: “Philnote” Just Doesn’t Have the Same Ring to It
• Oh My God, They Killed Macworld! You Bastards!
• Macworld Without Steve? That’s Like “Baywatch” Without Hasselhoff