Amazon has released its Kindle electronic book reader
And once more, it's US only :-( That may be partly because it uses EV-DO cell phone technology to connect, although you'd think it would make sense to support other methods like regular WiFi. It does have a USB connection but I'm not sure if that means you can load books from your computer.
They have monthly fees for some of the services and that's a little scary. But they don't charge you (directly) for the EV-DO so that's nice.
We'll have to wait and see how much Amazon locks the device to their services and how much they open it up. If they were planning to make their money off the service then you'd expect a lower price (like cell phones). If they expect to sell it for full price AND lock you into their service that won't be too attractive.