Apple’s boss Steve Jobs will, sources claim, attend Verizon’s presser this coming Tuesday as a special guest, joining the carrier’s CEO on stage to unveil a CDMA iPhone. John Paczkowski broke the news on the Wall Street Journal’s Digital Daily blog, explaining that Jobs’ stage appearance with Verizon’s boss should help the nation’s #1 wireless company to make a bigger splash:

While the appearance isn’t 100 percent assured, sources in a position to know tell me that, barring any unforeseen circumstances, Jobs will likely join McAdam onstage in New York when he announces the addition of the iPhone to its handset lineup.

Some folks were surprised that Verizon, not Apple, would announce a CDMA iPhone. After all, it’s Apple’s baby, right? However, a small update to the existing product – from the consumer perspective – simply doesn’t justify a full-blown media event in Cupertino, California, John Gruber explained on his Daring Fireball blog:

This is the sort of thing where Apple needs to play it cool, and act like this is just another carrier. Good news, but not big news. The bottom line from Apple is going to be something like, "We’re delighted to add Verizon as an iPhone carrier". That’s it.

The blogosphere went abuzz with the yesterday’s news of a little red invitation Verizon sent out to select members of the press. As BSN reported, the carrier is hosting a press conference next Tuesday in New York, three days from CES where it announced its fourth-generation wireless network and unveiled a compelling lineup of smartphones, tablets and notebooks that take advantage of it.

The timing of the media event to be headlined by Verizon’s president and chief of operations Lowell McAdam immediately gave birth to rampant speculations pointing to the arrival of a CDMA iPhone 4. When both the Wall Street Journal and the New York Times joined the guessing game, they lent the rumor-mill a much-needed aura of credibility.

Verizon iPhone is being described as an adaptation of the existing iPhone 4 with added baseband chips that support the carrier’s CDMA network. It’s also said to sport a slightly changed stainless steel band to help alleviate the widely-reported death grip issue, pictured above.

A YouTube video of this new frame was making rounds on the web until it was pulled over copyright violation claims by Apple, Inc. The rumored product has already catapulted Apple’s valuation north of $300 billion. AAPL gained 0.72 percent in yesterday’s after hours trading, hitting $338.10 a share, totaling a market cap of $308.33 billion.