Got mine yesterday, 128GB Cellular, with Smart Keyboard cover and Apple pencil. Got to say, first impression is, this thing is crazy fast and smooth (compare to my iPad air2), when i work on my interior design apps. The key boards pretty useful (need sometime to get use to the small key) and nicely fit the iPad. The True Tone is pretty nice add on. Also, The speaker is loud, in a nice way though.
As for the Apple pencil, i think they need to find another way to charge it, it's so awkward to charge on the iPad itself. Another thing that annoy me a little, is that the when you have to keyboard cover on the iPad, it's add a lot of weight to it. I always like laying down on my bed and read at night before sleep, and it was uncomfortable to hold it, so i had to take out the cover. But i love it so far