It's been so long since the Txtr was in the news that you could probably use a brushup. It's based on a 6" E-ink screen, and it has a microSDHC card slot, accelerometer, Wifi, and 3G (no touchscreen). It also has a unique feedback when you press a button: it vibrates. I had my hands on one at CES 2010. It was a pre-production model, and it was considerably heavier than any other 6" ereader I've used.
One thing you should keep in mind with the Txtr is that it is heavily dependent on having a Web connection. I didn't have one in Las Vegas and it felt half crippled. If Txtr over closed their doors this ereader would be crippled. BTW, so would the iOS, Android apps.
Johann shot a hands on video: