Here's a link to Dart based website setup by Allpar (I believe):
2013 Dodge Dart: the hot upcoming compact car
Several pre-production interior pics, along with an uncovered front end photo (not a rendering).
For me, my two biggest areas of concern are weight and cost.
I know that many safety features are now required, however if this C segment car weighs in at 3100-3200 lbs. then it just won't cut it. While based on the AFG, the chassis is being lengthened and widened for the North American market. Along with several statements from Dodge claiming to be the widest, longest and tallest car in the segment, really leads me to believe this car might be a bit of porker compared to some of it's competition. However, the body went from a 5 door hatch, to a 4 door sedan, so maybe that will offset some of the weight brought on from the chassis enlargement.
As far as cost is concerned, that's one reason the Caliber failed where the Neon really succeeded. Sure, the NSRT-4 cost nearly double of a base model Neon, but at around $20k was the best performance car for your buck, period.
The CSRT-4 on the other hand was over $30k base and well equipped around $34k, which was Charger R/T territory. For the market the CSRT-4 was aimed for, it was just priced way out of reach, and well above better quality offerings from the competition.
Rumor has it that the Dart will base around 15-16k, with R/T models around 21-22k, which would probably put an SRT closer to 27k. In order to succeed at that price point, it really does need to be better than the WRX and MazdaSpeed offerings.