Interestingly I`ve noticed that there appears to be some obvious differences between the 60% scale Q-313 UCAVs.
The one at the top of the picture has a very different nose profile compared to the other 2,which look to have been shortened with better blending of the canopy.The intake design also looks slightly different as well.
One of the most obvious is the difference in design of the landing gear struts and the repositioning of the front gear in the other 2 examples,one can see that the gear looks to be roughly positioned towards the back of the duct in front of the intake,whereas with the top example the gear looks to be positioned much closer to the front of the duct.
Perhaps the top one is the prototype with the other 2 examples being the pre-production models?.