This, while pertaining to USAF musings, i think aligns reasonably well to my argument for an unmanned, supersonic, LO, regional bomber kind of airframe as an AAM truck to work with the H-20 along others. Yes, the americans are talking about subsonic, but i see no reason why China should not one-up them. Besides, such a supersonic, supercruising airframe would work wonderfully with the supercruising J-36/J-50.
Of course, as it is now GJ-X could serve as a missileer as well, but that would merely equal potential US capabilities in this regard. Like with the UADFs, China should look to outmatch the US whenever possible, in order to compensate for inferiority in other categories.
PS: Not sure if this is more fitting for the UCAV thread, though as everything is interconnected these days it might pertain to both.