Wow, there are quite a few people taking this new design as a personal insult. That Apple didn't create the exact machine they wanted and now they are chucking a hissy fit about it.
I do think this is a big step in the evolution of the iMac - no Sdrive, new screen lamination - 75% less reflection, thinner screen, thinner design, lighter, less volume, fusion drive.
These are not minor changes. A lot of change has gone into this iteration. And at this point, I personally feel, that it's a huge step for the iMac.
Now, it's still remains to be seen if there will be any major problems associated with all this newness. But I'm really liking what I see so far.
Sure, some people won't be happy about no superdrive... but you can get an external. Some are unhappy about the 21s 16gig max ram and i5s but for the vast majority of people who don't play FPS or do intense video/photo editing on a mac, the 21s are perfectly fine machines that will be more than capable of doing the job... just they are overpriced -- as with most things Apple, this is no surprise.