A couple image assets included in the latest version of iBooks seem to have the same naming convention as iPhone apps have when they must accommodate both old and new iPhone displays. In other words, the images imply that the iPad 2 will undergo a similar transformation: remaining the same size while doubling the resolution of its screen.
If this true, you can sign me right up. Although the iPad’s IPS screen is bright and has a great viewing angle range, I’ve always found its resolution distracting. I thought I left 1024×768 behind back in the late 90s.