Those could be seen as incremental, but from the top of my head the two biggest changes could be: - foldables: they're a real game changer regarding where bike

Those could be seen as incremental, but from the top of my head the two biggest changes could be: - foldables: they're a real game changer regarding where bikes fit and where they can go. Designs also tremendously improved and the cycling performance is really good nowadays. - electric assist: it's not just adding a motor, a lot of work has happened to make the better of the it, and cargo bikes have become widespread mostly because of this.