Dude I ask this because I read Pshamim's post in the JF-17 thread :
You may call me crazy for dragging the Thunder in to PLA Navy carrier. Briefly,one of the simmering issue at present is how far J-10 can be improved and upgraded. J-10 is reaching a point where further upgrades may not be possible even though it is a great aircraft. JF-17 is not only inexpensive but has a lot of room to grow. A lot of talks and rumors are circulating, not necessarily that they are all true but they point to ideas that may or could be incorporated. I may state a few of them:
1. The single tall vertical tail may make way for twin tail to make it more stealthy. Also as Chinese have not designed and produced a twin tail yet, there seems to be a desire by the Chinese to introduce their own designed twin tail and introdece it for FC-1/JF-17
2. Twin tail will also reduce the weight
3.Change the circular rcs to diamond shaped cross section to improve stealthiness.
5. Keep the iconic DSI but make modify it due to changes in the nose
6. Increase the rounded edges on the wing. This will not only enable Thunder to perform better at low speed and at low altitude flying
This will also increase the wing tank capacity and increase range
7.Change the spine design and raise the cockpit for a better flight vision
8.Increase the take off weight.
Source: http://www.defence.pk/forums/jf-17-...ole-fighter-thread-4-a-452.html#ixzz2H1TShYIb
I understand and agree that the JF-17 has alot of room for further development but remember that PAF wants the JF-17 to be as cutting edge as possible while keeping costs to a minimum so that they can bulk up PAF numbers with the type. My guess is those advancements will be preffered which have limited impact on cost. The role of the J-10 in PAF is totaly different - lower numbers but to be the sharp tip of the sword. In my opinion this is one of the reasons why advancements like AESA, which there is no sign of on the JF-17 at this stage are already flying on the J-10B. Former PAF ACM specificaly stated that PAF was keen on the J-10 due to its superior range and weopons load - but cutting edge capability enhancements - including AESA had to be in place before PAF would buy. I believe this was stated before the J-10B emerged.
Also when we discuss potential for upgrade and its importance - we need to keep in mind our requirements. If indeed J-10B comes to PAF with capable AESA, inflight refueling, advanced / updated counter measures, advanced avionics, IRST, what more upgrades will PAF need over the next 10 years other than ofcoarse continued avionics / weapons enhancements?