This is still a Cooler Master HAF, but with improves based on consumer request and new ideas on the market. This mid-tower has four 200 mm fans (two in top, front, and side) with one 140 mm rear fan to bring the level of airflow up even more. The body of the case has been extended and widened just enough to support large GPUs and much better cable management than its previous incarnations. Rounding out the features are a 90° turned side panel door for easy use, a massive 9 HDD/SSD slots, and plenty of front I/O connectivity with two USB 3.0, two USB 2.0, audio, and fan LED control.
Everything about the HAF XM screams it is bigger, cooler, and better designed than any other Cooler Master HAF on the market. The HAF XM can be had right now for $129.99 retail. If this is what CM plans to do with this series, then I can't wait to see more.