Amazon is, apparently, putting out two new e-ink devices with touchscreens. The cheaper one probably has ads on it. I assume these will be a lot like the new B&N touchscreen e-ink device. I've played with it in the store and it's pretty slick.
Amazon is also coming out with two Android tablets: a stripped down affordable 7 inch and a possibly tricked out 10 inch.
A 7 inch tablet is my dream machine. I love Apple, but they refuse to make an iPad that size, so I'm really hoping the Amazon 7 inch comes in at a great price.
Info on Slashgear.