I think the retina display in the 3rd gen iPad is likely to be the most significant feature bump that we will see in any iPad to come afterwards. And the other supporting features mentioned in the post above are good complements. I think these total out to a significant jump over the 2nd gen iPad that the upgrade is totally worth it for me (besides, I'm getting $414 for my iPad 2). I think the 4th gen iPad will likely have only tweaks in hardware -- faster processors, faster wifi, better battery, better camera, 3D, etc., but I seriously doubt there will be another bump in display resolution. There may be additional bumps in the OS, but some of that may come to the 3rd gen iPad too. No, I'm pretty clear on this. Now is the time to upgrade. I'll just skip the 4th gen iPad. I will have two full years of benefit from that lovely, easy to read display. That is important and worth the trouble.