Apple Working on 10-, 13-, and 15-Inch Tablets?

Gizmodo reports that in addition to Apple's much-rumored 10-inch tablet computer, the company is also developing larger tablets in 13-inch and 15-inch sizes. The source, which the report claims has been "100% reliable" in the past, also notes that one of those models would run full Mac OS X.

This source claims that the two touchscreen prototypes -- made of aluminum, but on the shape of big iPhones -- were in a factory in Shenzuen, China. One of them "was running Mac OS X 10.5." When I asked, the source didn't know if these were built for demonstration purposes, or if they were preproduction units. The company has a tight relation with Apple but "it's not FoxConn."

Recent rumors have pointed to a tablet introduction later this year or early next year, but most reports have claimed that the device would carry an approximately 10-inch screen. Rumors of other possible sizes have surfaced, however, with one report asserting that Apple had at least investigated screens ranging from 4 to 12 inches and another claiming that Apple will be releasing two tablets, one with a 6-inch screen.