I think you mean this bracket. This is a brand new model so it is difficult to get a DP/N of it yet. Meanwhile if you still want to add a second top front chassis fan you may try using grommets to fasten a 120 mm fan to chassis front fenestrated grill. the front bezel top half facade is solid which blocks direct air intake. If you add a top front chassis fan it will take air from the bottom and left/right side opening of front cover.  Lian Li case often has this design.[IMAGE] [IMAGE]    
Looking for one more XPS 8950 front fan bracket for the 120mm fan , part # shows 1B43T0000.
XPS 8950, front fan bracket