I saw yesterday that Barnes and Noble released their e-reader for iTouch/iPhone, Blackerrys, Mac, and PCs and at the same time opened up their ebookstore online to more than 700,000 books.
I think it's a great move, and I downloaded it right away. I'll sync up my iTouch and see how it compares to the Kindle reader.
One downside of this device, the formats used by the application aren't compatible with other devices directly, like the Kindle. They do support the epub format, so that's good, but it's disappointing that someone can't move content easily from the Kindle to the B&N application.
I also heard that they will be sending their books to the Plastic Logics reader, which is due to come out later this year.