Second-generation H6 Coupe will be introduced as 2018 Red Label. Engine is 1.5 GDIT. The Blue Label from the first generation, with a minor facelift, will continue. The fate of the first-generation Red Label, which was launched as recently as March 2017, is unknown at this time. That one is powered by a 2.0T engine.
This will coexist with first-generation Red and Blue Coupe models, which are still available in many variants (2WD/4WD, MT/AT, 1.5T/2.0T, petrol/diesel).
Personal comment: I think it would have been better if this was launched as an M6 Coupe as (1) this and the M6 have similar and relatable front ends and (2) it would not get lost among the crowd of vehicles called H6.