GM has unveiled the 2014 Chevrolet Impala at the NY Auto Show. You can see nice photos here.
I like the exterior design, it is a big improvement over the current, ancient Impala.
The interior is also a big upgrade, but to me seems a bit busy.
GM says that it will come with a choice of 2.5L I4, 2.4L eAssist (mild hybrid), and 3.6L V6 powertrains. It should get pretty good fuel economy, but with the I4 engines pushing about 200HP, it is not going to feel very quick unless the weight is substantially reduced over the current model. Looking at the photos, I'd be surprised if it is less than 3750#.