This makes me excited: Mashable posted an article recently about possible talks between Apple and publishers to get magazines and newspapers onto the iPad.
Ok you can already do this to an extent - I've bought an issue of Wired for example just to test out the functionality (watch a demo on YouTube if you haven't seen one). And you can buy single issues of various publications. Exact Editions do this for example.
But it'll be fascinating to see who Apple signs up for this, what the models will be, and how interactive the publications will be for the device.