The case is apparently a bit bigger, which means that you would be able to fit big video cards with rear mounted power connectors together with hard drives in the middle cage - barely, though, judging by this picture (page six of the SPCR review).
The case is apparently better ventilated, especially at the front - though it is questionable how well a non-directional airflow dissipation will work.
The bottom fan had been moved from the middle of the case to the front of it - which will improve the airflow through hard drives installed in the bottom cage.
- The bottom fan moved to the front will increase acoustic noise.
- Bottom fan is now optional (read: you will ave to pay extra).
- Hateful Tricool 120 fans. These will have to be ripped out and thrown away, for the level of noise they generate is unacceptable. Assuming the same Scythe SY1225SL12M are used, this, again, brings the price up to $200 - and again, you have better options in that price range.
- Fan grills. Problems with them have gone unnoticed by original P182 SPCR review, and I was unlucky enough to discover them only after all the components wer installed. In this incarnation, though, the problems were so aggravated that it deserved a special note from SPCR (look for this picture) and read the comments. This means that before the components are installed, the fans have to be ripped out even if you decide to keep the stock Tricool fans, and something will have to be done to the grills to smooth the airflow.
- Antec CP proprietary PSU form factor and mounts: given the fact that all Antec power supplies I've ever bought have already died, most just outside of the warranty period, and one barely within, and it still hasn't been replaced yet, I (my humble personal opinion) couldn't care less about their improved proprietary technology, no matter how good it sounds on paper. Simply can't afford to waste that much money and risk the life of equipment those PSUs feed.
Thanks, but no thanks.