According to Gizmodo, Apple has indirectly confirmed the existence of its yet-to-be-announced Apple Tablet by sending a cease and desist order to Gawker in the wake of that website’s offer of cold hard cash to anyone who submits verifiable proof of the existence of the device. From the Apple letter:

While Apple values and appreciates vibrant public commentary about its products, we believe you and your company have crossed the line by offering a bounty for the theft of Apple’s trade secrets. Such an offer is illegal and Apple insists that you immediately discontinue the Scavenger Hunt.

[…]

The information you are willing to pay for, such as photos of a yet-to-be released product, constitutes Apple trade secrets.

According to Gizmodo, however, Gawker’s offer still stands, at least as of this writing.