Yes, but it features at least canards, a tail-hook + overall a different internal structure ... as such IMO a new number makes sense, but not for a simple pimped-up J-11BS ! As such also the combat-capable J-10AS and future BS should get a new name too.
Deino
Fair enough -- but J-10AS doesn't have any capabilities over the one seater J-10A, whereas J-16 has the extra dimension of A2G compared wth J-11B/BS.
If those pics do turn out to be J-16 it'll make differentiating between J-11BS and J-16 production much more difficult in future... though if we see a regiment of pure J-11BS we can probably guess they are J-16s.