I don't know. It seems to me as if there is a trend to go back to the origins at the moment, with more black, more lace and more velvet.
There might be return of the dreaded crushed velvet, which I find rather cheap looking and horrible to sew.
I see that even in Cyber, the amount of neon colours is fading and a general trend to black and white is obvious.
Steampunk might be visible for thenext few years, but then return to be a small subscene.