The little extra for Devil May Cry 3 on Switch is a Style Change option, so that you switch between Swordmaster, Gunslinger, and other styles on the fly. It really is something new, since this option isn’t available in any other version of Devil May Cry 3. Based on the screenshots your current style is shown the upper left hand corner of the screen.
"The new Style Change system allows you to experience the action through a number of unique Styles allowing for unprecedented variety," the Game Systems portion on the website reads. "Level up the Styles and weapons as you see fit and create a playstyle all your own."
Devil May Cry 3 comes to the Switch on February 20 as a digital release and this new system is sure to change the way the game is being played.