I dont understand your "need" for change of racquet? If he is comfortable with it, leave it. He can periodially check whats new in basically free "tryouts" and if he likes something that much then you can do change...
They also had "intelligence fibers with microchip" in alpine skis with purpose of modyfiyng of the ski stiffness with relation to the snow quality... (and ppl believed this, sigh)
in regards to the HEAD marketing bs related always with new discoveries it will be for sure: "Garbagephene GW (gravity waves) Touch Hyper Boost" or something similar...