While it is true that we have seen and heard about F-series models previously, the proposed F2 ultimately became the H2s and the F6/F6i became the H6 II/H4. Also some H6 Coupe variants had been revealed in MIIT notices to carry F7 or F7x badges.
In support of this claim, the article points out that the slightly facelifted 2018 H7 has been released in only one form, Blue Label. We also notice that the new H6 Coupe (II) was only released in one form: Red Label. Complementing this, the H6 Coupe (I) was also brought into the 2018 model year in only one form (Blue Label), and this latter one is a potential candidate for the F-series shift (But why F when you already have an M-line?)
Of course, some models never became part of this bicolor strategy (H8, H9, M6). Recently, GWM has suffered massive declines in net profit in a couple of quarters which analysts say are due to promotional costs (think about the numerous variants!) and generous discounts offered to move product.