Replying to J skis technology update

Sitting bored in class and was wondering something which you guys can hopefully help me with.

If you look at most skis, the same model will get tweaks and updates year on year to ensure the ski is as good as it can be given price, available materials etc.

With j skis, models like the whipit seem to have been around for a while but the only update seems to be graphically. Whilst jlev obviously drops new models, do established ones like the whipit get updated technologically year on year at all?