From Keev (Via Malek, Thanks Malek!):
Translated from French:
"The Build which i did play at NEC is the same that i did play in france to Paris game week.
When i did replay nightmare, i could see a good throw's range, 3B is garanted after GSK BE, 3AA is more safe because the push back is good.
I did think 4K, BE was NHC but finaly i'm not sure. If it's true, this will a very good mid because he does RO and WC. This CE was imblocable if he hits close but no. Just guard break and no break soul gauge. However there is an interesting combo with CH GSB : GSB, GSB, GS K, BE = half life
Nightmare is always unsafe (WSK, 11A new mid anti step, WSA, 3B, 2K, GSA etc.). The TC frame of GS changed because is more difficult to evade under AA with 33B GS or WSB GS. Morever GS A in hit push a lot so no throw without dash forward. I fear because Night will be strongly displayed in punishment by CE (editor's note: while in stance transition).
If he finds his former blow of zonning as 11K, 11B, 22AB or if they improve his stance B+K with some good mids as Seig's stance. Night will really competitf. I wait to be able to play the new version with Aeon and co to see if yes or no he will have new moves. I hope !!!
Ps : I'm just discover that NSS A in NC give priority. Finaly i think maybe Nightmare will be strong. Wait and see :)"
Thanks Keev! Looking forward to more :)
Edit: Can anyone find a video or Nightmare transitioning WS B into GS? I have seen it in SC5, can't remember where though.