I don't think that's the real design shown on the net. SE's phones are always revolutionary in design and I certainly do not want an "Arc-head-Neo-butt" phone. But the specs are not just nice, it's incredible. But there's no official announcement so.. :\
Yes I've read the new Arc S but I doubt it's going to be much of an attention anyway. They could have at least increased the RAM or just a little modification but nothing. Anyone could've flashed a custom kernel and get it up to 1.8Ghz on 8255 chips.