A tablet version of the Mac will be on the market by early 2010, if not sooner, which, according to industry analysts who follow Apple would bring Apple billions of dollars of new sales.

We expect Apple to fill the gap between the iPod touch and the MacBook with a new tablet device (not a netbook) priced at about $500-$700, Piper Jaffray analyst Gene Munster wrote recently in a note to customers of the company. Apple will likely leverage its multi-touch patents to differentiate its product from the typical netbook, Munster said.

Munster had discussions with an Asian component supplier which said it had received orders for a touch screen device that needed to be filled by the end of the year. Munster believes that's evidence Apple will launch a new tablet PC in early 2010.

We expect the tablet hardware to be similar to an iPod touch, but larger and we expect the key differentiator of the device to be its software, Munster said, adding that the software could resemble a version of the Mac operating system used in the iPhone, and also provide access to the iPhone's popular App Store.

Munster estimates that an Apple tablet device will probably cost around $600, placing it between the highest-end iPod touch at $399 and the MacBook, which starts at $999.

At $600, Munster calculates that sales of 2 million Mac tablets could add $1.2 billion to Apple's sales next year.

Although the preliminary data regarding Apple's products is rarely correct, it is still logical for the company to release a device that fills the gap between iPod touch/iPhone and Macbook.

Apple needs to introduce lower-priced offerings into its notebook lineup, said Toni Sacconaghi, who covers Apple for Bernstein Research. Small changes in price can meaningfully expand Apple's addressable market.

How low Apple is willing to go on price has been debated for years, and probably will be even more so now that the company has seen rivals such as Hewlett-Packard Co., Dell Inc., and Acer Inc. claim success with smaller netbooks.

Apple officials have been unwilling to discuss publicly the idea of something like a netbook, claiming that such a product would dilute the value of the Mac brand to a point where putting out a netbook would never happen under the current corporate regime.

For us, it is about doing great products, Apple Chief Operating officer Tim Cook said during the company's quarterly earnings conference call in April. And when I look at what is being sold in the netbook space today, I see cramped keyboards, terrible software and junky hardware. And not something we would put the Mac brand on.

But the move to a tablet or netbook device may be necessary for Apple to maintain some of its cachet with students and customers looking for more capabilities in their mobile computing devices, as well as to counter a leveling-off of its notebook sales.

Sacconaghi, of Bernstein Research, said Apple's share of the notebook market has largely plateaued over the last four to six quarters, and began losing some market share during the second quarter of this year.

Sacconaghi says the recent notebook data suggests the market for high-end laptops, which cost $1,000 or more, has been showing signs of declining, and Apple is approaching share saturation in its high-end customer base in the U.S.

Shaw Wu, of Kaufman Bros., said Apple may have seen the need to get into the netbook, or tablet market, before it's too late.

Apple has been buying up touch screens in various sizes ranging from 4 inches to 10- and 12-inch models to determine what form factor would work best in a Mac tablet, Wu cited sources with Asian computer manufacturers as saying.

With holiday shopping season approaching, speculation is growing about what will be the next must-have device that Apple hopes will wow consumers and lead to a boom in sales.

As usual, timing is always tough to pinpoint as Apple works on its own schedule, Wu said.

Whether Apple gets the new devices out in time for the holiday shopping season or pushes the release of a tablet into next year remains the key question.

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