It's another special edition enclosure, though instead of splashing it with graphics based on a game, it takes on ASRock's Phantom Gaming branding. There are silver and red scuff marks on both side, which extend from the bottom and over to the glass side panel.
I don't hate the design, to be perfectly honest, though I also have not seen it in person (just the press renders). It helps that NZXT is starting with a decent case—the H510i is a slightly smaller version of the H710i, one of the best PC cases in the mid-tower category.
Being an "i" variant, it comes with a smart lighting and fan controller. Specifically, it's equipped with NZXT's Smart Device V2. It has a faster processor compared to the first-gen model, with two Hue 2 RGB lighting channels and three fan channels that support either voltage regulated or PWM fans.
Two Aer F 120mm fans also come with the chassis. The case supports up to two 120mm/140mm fans in front, one more of either size up top, and a single 120mm fan in back.
For storage, the case offers 2+1 SSD (2.5-inch) drive bays and 2+1 HDD (3.5-inch) drive bays. Meanwhile, the front I/O offers up a USB 3.1 Gen 2 Type-C port, a USB 3.1 Gen 1 Type-A port, and a 3.5mm headset jack.