The Courier is a hinged device that combines elements of a tablet, an e-reader, and a netbook (sans physical keyboard). It's reported to be less an inch thick, slightly heavier than a pound and slightly larger than a 5x7 print when folded. Instead of running Windows 7, the Courier will run the mobile OS Windows Mobile 7 Series, with an NVIDIA Tegra 2 chip under the hood.
Other leaked features include handwriting recognition, cloud storage for all the data in the device (plus a way to integrate comments on shared items back into your journal), a built-in camera and headphone jack. Unfortunately, none of this is yet official from Microsoft itself, so everything including the loose "second half of 2010" release date is still a bit speculative.
Nevertheless, the Courier is shaping up to be an exciting take from Microsoft on an Internet tablet meets e-book reader, particularly as both of those form factors continue to heat up. Check out more pics in the gallery over at Engadget (and if you missed it, the earlier leaked video) and let us know what you think of this device from what we "know" so far.