Hi Mario.
The photo I have seen taken by a dealer last month shows a modified suspension upright very similar to the one shown in the e-mail to Rivette although the mounting bracket for the mudguard is much neater.
I assume that as the 2014 model shown on the stand at the NEC had the current upright, the mod is not yet ready for release. Although, as mentioned a while ago, the car used in the Albert Ball video, provided by MMC did have to modification.