My first oil change was at just short of 10,000 miles. The owner's manual shows an oil change interval of 10,000 miles. I think the truck's computer calculates oil life based on driving conditions and how hard the engine is working, so the oil change interval could vary from one oil change to the next. I plan on changing my truck's oil whenever the maintenance minder says that it is due.
If you think that's a long change interval, look at the specs for the 10 speed transmission. It shows an interval of 150,000 miles. To add to that, the transmission does not even have a dipstick to allow for checking the fluid level. The transmission uses a ULV (Ultra Low Viscosity) fluid, so I can only imagine it's like water running through there. I guess it's all good as long is it keeps working.