yep those wing-tips do look slimmer, so just maybe I guess
btw someone living in Shenyang said this on Weibo today (ID: 9谢艺航6): 601's side-by-side dual-seat stealth tactical bomber (kinda like a stealth su-34 I guess?) and the follow-up version of the FC31 have both seen test flights. However I can't verify if he's telling the truth for he posted no photos. (plz tell me if I posted this in the wrong thread...)
Screenshot of his original words down here:
View attachment 52505
Hmmmm ??? How credible or reliable are these rumours?