If this is the Outlook, I don't think it's really intended as a Yukon (station wagon on truck chassis, called an "SUV") replacement.
GM has decided that minivans are not desirable anymore, so they are building them with swinging (instead of sliding) side doors and bigger tires
, and calling them "crossover utility vehicles". Whatever label you use, it's a reasonable size and type (station wagon) of vehicle, and the new GM "Lambda" looks like a decent design (I had a good look at a recent car show).
The article mentions the extra foot of wheelbase these wagons have over the Honda Pilot and Toyota Highlander. That's because (in front-wheel drive form, anyway) they should be comparing them to the Honda Odyssey and Toyota Sienna (which have the dreaded embarrassment-inducing sliding doors). More wheelbase is good for towing, which is why so many of us are pleased with our minivans for towing our eggs.