I don't want to speculate too hard, but if the trailer is early episodes, then TOMORROW we might see Blake and Sun epic parkour action and mecchas. That equates to Sun's 2nd badass debut.
Of course, the mecchas would combat Remnant's, but don't you think they look similar?
EDIT: Sorry, just realized Blake was in her regular clothes. Probably won't be next episode. What do you guys think is next, then?