We have been hearing rumors about this W Mag cover since late May...
Magazine Shelf tweeted this 16 hours ago.
"Kristen Stewart fans! Kristen is RUMORED to be on the Sept cover of W and a cover of Elle by the end of the year.That is all I know for now!"
W Mag will be out in the UK, September 7th according to NewsstandUK via gossipgyal
and the US, prolly mid- August.
Last July 27th, W Magazine Fashion Director, EdwardEnninful tweeted this, "wrapped up my 1st issue of @wmag - September Issue - out August. Thanks for all the kind tweets. There's a few big surprises... enjoy!"