The sub-$100 price tag will be prove even more astounding if the XO-3 fulfills its creators' goals of melding the iPad, Kindle, and laptop into a durable, kid-friendly package.

But is this a realistic goal for such a low-cost device? Given the history of OLPC's much-ballyhooed , which never quite hit its aggressive price point and now costs nearly twice as much (you can for $199 to a child in a developing nation), I have my doubts. And don't forget about the abandoned XO-2 touchscreen device, a project cancelled last year when OLPC realized the unit would cost too much to make, Forbes .

So what do we know about the XO-3? It's expected to be a 9-inch touchscreen tablet powered by a 1GHz processor, although the specs could change between now and CES. Made mostly (but not entirely) of plastic, it may also feature a reflective (non-backlit) display, such as those found on the Kindle and similar e-readers. A reflective screen, which uses less energy and is easier to read in direct sunlight, would benefit kids who do a lot of schoolwork outdoors. A backlit display, however, is easier to read indoors, particularly in rooms with little ambient light.

Laptops, Not Tablets

Even if OLPC delivers the XO-3 as promised, is a tablet computer really the best choice for school children? As the iPad has shown us, the tablet is a device for content consumption, not creation. It's a very good e-reader, video viewer, and Web browser, but it's far from ideal for writing lengthy documents like school reports.