This is all speculation, by which I mean prewank. The point remains that the creators aren't withholding Dean spoilers because they duncurr about him and he'll be doing nothing all season while Sam goes on a series of dates with an increasingly large harem of women, but because he ended the last season in an intense situation and they don't want to give away how that's going to play out. Note that the only Sam spoiler we've gotten involves the first episode to shoot, refers almost entirely to the primary character introduced by that episode and to Sam only with respect to her, and tells us nothing about the seasonal arc or any aspect of the situation set up in the S7 finale.
Re: question about Sam and season 8.
This is all speculation, by which I mean prewank. The point remains that the creators aren't withholding Dean spoilers because they duncurr about him and he'll be doing nothing all season while Sam goes on a series of dates with an increasingly large harem of women, but because he ended the last season in an intense situation and they don't want to give away how that's going to play out. Note that the only Sam spoiler we've gotten involves the first episode to shoot, refers almost entirely to the primary character introduced by that episode and to Sam only with respect to her, and tells us nothing about the seasonal arc or any aspect of the situation set up in the S7 finale.