Oh well.. I think apple is just being delusional with this product! In its current state without any major input ports, its inability to run desktop apps and no mouse and not even a track pad on its "smart keyboard", how in the world will it replace many many notebooks or desktops or for that matter anything!
Its probably best for graphic designers/animators and mostly people from the graphic industry due to its precesion Apple pencil but for the common man its mostly a useless device which is too big!
So like I said in its current state iPad Pro will not replace any of the mentioned claims and hell it wont even replace my ipad air 2! (Tim should stop smoking that weird stuff he is on!)