Amazon just introduced new Kindle DX. The thickness is only 1/3 of an inch like most magazines and can carry up to 3,500 books, magazines, and documents.
It has a 9.7″ e-ink screen with Auto-rotate feature. It has 3G wireless that you don’t have to pay a penny for network connection or search for Wi-Fi hotspot.

It will be released this summer. Until then check the link below.