The enTOurage eDGE is both an e-reader and a netbook in one. It has two displays, one is an ePaper and the other is an LCD. It has Wi-Fi and runs on Google's Android OS. It supports ePub and PDF file formats.
It will be released in February 2010, for 490$.
E Ink display info:
1024x600 touch LCD (10.1") and a 9.7 touch E Ink (1200x825), 16 shades of gray