Kindle Reader on iPad updated

One of my complaints about the kindle app on the iPad was when you change to landscape, you only have one page, one really wide page. I found this makes it not as nice to read as the Apple iBook application.

Amazon have released an upgrade to the Kindle app on the iPad to allow 2 columns. This means that when you change a kindle book to landscape, you see two columns, so it looks like two pages next to each other.
 

This seems like a small change, but it makes the kindle books much more readable.