So that article is insuating that Focal have said they've increased the bass, and "linearized" the treble, and potentially improved the spatial qualities of the headphone. Hmm, ok, well it would be interesting to have it measured....I'm not sure how accurate the article is in it's claims of what the differences are compared to the original as the when I skimmed the Focal website I couldn't really see any specific claims (but I might have missed them, I did skim it!).
Increasing the bass and "linearizing" the treble would be beneficial though, if they mean removing the peaks & dips in the treble vs Harman Curve when they talk about "linearizing" - given the folllowing current frequency response of the original Focal reviewed in this thread: