I like it... looks like a 21st century stealthy interation of the one eleven aarddvark with double delta.
It's based off this famous picture.
Interestingly we've only ever had this single picture of not only the model but also from whatever exhibition it was displayed at. The censors were active in removing related posts to this picture on the Chinese BBS initially, if I remember correctly, which is why quite a bit of attention was given to it.
The picture looks to me like a F-111 to Tu-22M sized regional bomber (which the model definitely suggests I think) and it was briefly dubbed JH-XX (hence the title of this thread) while H-X is the flying wing. Note there appears to be a side bay in addition to the main landing bay, which was speculated to carry MRAAM, maybe for self defence
The JH-XX model appears similar to the concept of YF-23B, actually.
Unfortunately we have no idea whether the PLA were interested in this concept.
I think it would be better for China to first develop a smaller, "regional" platform because such an aircraft would be cheaper to produce and operate, and would therefore allow for more rapid recapitalisation and expansion of the roles currently serviced by H-6. Such an aircraft would also have the advantage of raising less alarm in distant regions currently unthreatened by China's rise such as Africa, the Americas, Europe, the Middle East and even Russia, and of course provide invaluable experience and lessons learned for a future "global reach" platform.
Most significantly, I would argue that China's enduring geopolitical circumstances ultimately favour such a split bomber force: a regional bomber in greater numbers to address the dense regional environment which will dominate security considerations over the next generation, and a larger strategic bomber to be fielded in smaller numbers at a later date, when China has more experience and resources, and a more global outlook and footprint. Contrast to the United States which has no comparable regional challenges and therefore no need for a regional bomber.
Like latenlazy said, I think the H-6K currently fills the regional bomber role quite well.
Of course, developing a successor that is stealthy, possibly with slightly enhanced payload and range would be very useful especially if the PLA wants to have a larger number of stealth bombers in service, but I also think there is something to be said for developing a true global bomber as such an aircraft will likely serve in the PLA for quite a few decades, and in that time a true global air strike capability will probably rise in need for the PLA.
Also, a larger bomber can carry a bigger payload with greater range without refuelling meaning more flexibility for a bomber based deep in the Chinese heartland to hit targets far out in the western pacific, with less vulnerability than if it was situated closer to the coast.
That said I can see the argument for both a regional vs global bomber, and both have their benefits and drawbacks. If I had to choose I would have to flip a coin.
However I think what would be useful is a stealthy regional bomber with supersonic dash (or supersonic cruise would be even better) in lieu of the JH-XX model for anti shipping missions and striking targets that are well defended with CAP and IADS, while the slower and stealthier H-X (whether it be global or regional sized) is used for dropping more munitions against targets with already degraded defences.
