This week’s roundup of payment rail innovations shines a spotlight on how B2B FinTechs are expanding the functionality and value of existing payment rails. Visa’s Visa Direct, for instance, embraces the company’s card rails to add value to professionals seeking early access to wages, while Billtrust embraces more legacy payment rails with its B2B payment service to streamline the movement of both funds and information. Meanwhile, the Federal Reserve’s plans for a new payment rail have hit some resistance.