It looks really nice. But these days, most mid sized sedans do. (I just saw a few of the new Altimas, and they do look really good on the road.)
Mazda desperately needs something that stands out. And I'm not sure this new 6 does that.
A2.0 Liter is available in some countries, with 148hp. The engine of choice for the US will be a larger 2.5 Unit with 189hp. With Mazda's Skyactiv technology. Even though a diesel is coming to the US next year, it isn't sure yet if it will end up in the 6 or another car. Maybe the redesigned CX-9 will get it first.