WSJ: Apple iTablet/iSlate to Ship in March, 2 Different "Material Finishes"

The Wall Street Journal is wading into that whole Apple iTablet/iSlate thing, saying:
Looking to build on the momentum of its iPhone and iPod, Apple Inc. will unveil a new multimedia tablet device later this month, but isn't planning to ship the product until March, say people briefed by the company.
Now for the weird part:
Apple was working on two different material finishes for the device, one of these people said, though it was unclear whether the Cupertino, Calif., company was just testing the finishes or planning to come out with multiple versions of a tablet at different prices.
Plastic vs. unibody aluminum? Black vs. white Plastic? Adamantium vs. unobtainium? They care nothing about further elaboration, so we're left to wonder.
Still rumors of tentative schedules and obscure design elements is something, right?
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.