Shimano has unveiled a new SPD-SLR pedal and cleat system, marking the company's first major shift from SPD-SL road cleats since 2003. The new system includes redesigned Dura-Ace and Ultegra pedals, thinner CL-SL120 cleats in four variants, and updated S-Phyre shoes, offering benefits such as lower stack height, more natural engagement, reduced weight, and simplified adjustment.