Im sure they will offer the base model with a tire similar to the ranger, and the upper tier models will have the big tires as an option.It’s hard to tell from the photo but those look more like retractible steps than sliders. At least they don’t look like any sliders I’ve seen before.
I hope they keep the tire profile they have on the mule. I hate it when they put low profile tires with big rims on a 4x4.