I'm surprised how everybody seems to acknowledge the slight sloppyness of those graphics but at the same time certain that it's wip or "lowest settings mixed with good settings footage".
After all this is all based on your good faith in SE not facts.
Why would any pr material for any game ever be released showing low settings (and no disclaimer saying that) is beyond me.
If it is true then I'll be shocked. I haven't heard any major publisher doing that or even recommending it to be done.