Guesses range from an online game to a digital comic book to a virtual Harry Potter encyclopedia to a new promotional effort for the final movie in the franchise, "Harry Potter and the Deathly Hallows: Part 2, " which hits theaters July 15.

CNN: J.K. Rowling previews mysterious 'Pottermore' site

With a hotspot directory and promotional offer on T-Mobile Hotspot access, Sony put in a good effort to move beyind the product's small frame, but the price could be a bit friendlier and Bluetooth and AIM support are two key missing features.

ENGADGET: Switched On: The 2006 Switchies -- Portable Products