The way things are going it is likely, after many years of pretty fixed standards the manufacturers have started changing things on a regular basis to force things into obsolescence or start a new trend so they can sell more. It is good to have the variety but some is more for the sake of it rather than a real need or improvement. This is especially noticeable in mountain biking with 26" wheels being replaced by 27.5" wheels, plus sized bikes, boost hubs etc.