While it's no news we all would suppose the SAC's will be a tier 2 5th gen(F-35 equivalent), for some reason I have a feeling that SAC's "F-35" will be a much more successful project than its American counterpart...at least less politics, hassles, and irrelevant customers..
Actually the assumption is sac's 4th gen is a twin engined aircraft either heavy or medium heavy :-/