More reasons to believe the Apple iTablet is for real.  See a study by Flurry.

Using Flurry Analytics, the company identified approximately 50 devices that match the characteristics of Apple's rumored tablet device. Because Flurry could reliably "place" these devices geographically on Apple's Cupertino campus, we have a fair level of confidence that we are observing a group of pre-release tablets in testing. Testing of this device increased dramatically in January, with observed signs of life as early as October of last year. Apple appears to be going through its cycle of testing and polish, which is expected from any hardware or software company as it nears launch.

Apple is expected to announce the yet-to-be named hardware on Wednesday, January 27 in San Francisco. There has been broad speculation about the functionality of the tablet, and what kinds of content and media partners the new device will feature. Additionally, there has been speculation about the most likely use cases for this kind of device, as well as which operating system the device will support. The choice of operating systems is particularly important for application developers because if the tablet runs on the same or upgraded operating system as the iPhone, then current applications running on the iPhone will also run on the tablet.

On these devices, Flurry observed approximately 200 different applications in use by testers. Studying category trends provides insight into the kind of user Apple is targeting and how it expects the device to be used. Below is a chart that shows the number of applications in use by category across test devices.

For the complete article take a look at blog.flurry.com