Yep, it's reversed by default. They are calling the setting "natural" scrolling, meaning it works like the touchscreen world where your fingers are pushing the metaphorical "sheet" of content up when moving up, vs the traditional scrolling being a manipulation of the scroll bar. I've adapted to it on the touchpads, though switching back and forth is a bit weird. It makes a bit of sense if you ever work with both an iPad and a touchpad on the Mac within a short amount of time. For the scroll wheel on traditional mice, I'm not sure what I think about the change there. For now, I've reverted where I use a mouse, due to it also impacting how games read it.