Since Marvel Now is basically what Marvel looks like... uh, now, any modern version of a character we're looking at is a Now costume. Can't imagine everybody we do going forward will be Silver Age. Although a few '90s costumes need doing.
Well doubtful if the costumes are going to remain (especially for the Uncanny X-men, Cable and the X-Force, or Uncanny X-force or the supposed All New X-men costumes we're seeing next wednesday.) since they'll probably go to classic/iconic after this push, the new costumes seem fickle, lol.
Of course, you could be right, and these costumes are going to remain this way for a while, and we'll just see updates sometime soon.
I just want Revolutionary Scott and non underwear clad Magneto or armored Magik lol. Or a decently dressed Psylocke.