trilogy: a its release was bit sudden and unexpected, but it's part of the group nonetheless. This fourth iteration of the iPad shares a lot of similarities with the previous version, so instead of our traditional, exploratory teardown, we're going to play "spot the differences" by illustrating all the changes from the last generation. [ … ] Feel a bit like the fourth bookNeed more teardowns in a trilogy yourself? Join the group on Facebook your life? Follow us Twitter or Twitter. find us on Facebook. Heck, you could even do both!