It's the Xigmatek HDT-S1284 (Achilles)

New design incorporates 4x 8mm pipes in a staggard configuration (something like the TRUE-120).

Note, the S1283 used 3x 8mm pipes.

http://www.xigmatek.com/product/air-achilless1284.php

I'd love to get my hands on this! Hopefully, they keep the price close to the S1283 to keep things competitive!