I wonder if the bar will be customizable (both icons and functionality) or if we have to live with what Apple provides for different programs. Would love to ma

I wonder if the bar will be customizable (both icons and functionality) or if we have to live with what Apple provides for different programs. Would love to map things I commonly do for bash or some generators etc. For touch typing I could also see just mapping the left, middle and right roughly so I only have to hit one of the buttons in that group for three extra buttons.