What design are you looking for? An oval?
Don't get disappointed until the phone is unveiled. The iPhone 5 was a beauty when it came out but now people are bored of it as it it's nothing new. I find that strange. So expect something that will pioneer the design for the newer iPads or MacBooks (I wanna see a macbook with a chamfered edge!)
People thought the iPhone 5 looked the same which was funny because it was physically bigger but thinner and had chamfered edges, new build materials, two toned back, precision speaker grills and repositioned front facing camera. Anything that Apple makes will undoubtedly resemble their other products because it's just easier to carry over designs.
I find my 5s fantastically beautiful. I have an apple cover on it and often take it off to see the actual phone. It really is beautiful without the cover. This brings me to my real point. I hope that they find a way to make a phone that does not require a cover. I am sure they make tons of money off the cover, but I think having a naked phone in public would pay off in the end (although I also understand that many have covers as a fashion statement all their own). Also without knowing how real these recent leaks are, I have been surprised to see how well they seem to fit in the hands of the person showing the mockup or faceplate. I hope that Apple has done a great job of balancing the larger screen while keeping to the one hand tradition.
I am excited to see what they actually deliver. It will still be rectangular and be mostly a glass front so I guess everyone says "boring." Yet, as you have well stated, the beauty is in the detail and Apple has been a master of the details. I expect the same this year.