Speaking of which actually, there's a rumor circulating right now that the air force variant will not be under the "J-31" designation but rather a "J-35(X)."
The J-31 (not the J-35 air force parallel) will be for export.
I thought 歼 is only for PLAAF aircraft. If it's strictly an export model, then it should be FC-X like how JF-17 is designated FC-1. Maybe they'll revive the FC-31 name.
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