The CBT3 video states that a dash function is being added, and that it’s activated by double-tapping a direction. I know I’m not the only one who absolutely loathes this control method. It’s imprecise and tedious to use often.
Phantasy Star Online 2 gives you several options regarding this: It has a dedicated dash button, and also lets you choose how long the double-tap delay should be, or allow you to disable the double-tap dash entirely, so that it can only be done with the dedicated button.
Ideally, this is what I want for ToS. Options are never a bad thing.