That would be weird and, honestly, a waste of time and money.What if they show a different demo, like the fight with Abse (the one showed in Japan, only).
They already have two demos: a short one (that should be kinda outdated by now) and a long one they're sitting on. The wording in the tweet makes me think they're going to use the short one (and, I mean, the leaked one is about 40 minutes long, which is a big no-no for a public demo).