A teaser is there to hint at new footage. This is straight up new footage. Your argument is therefore invalid. Whether it's fair or not is irrelevant, since the trailer would still have to be well edited and showing exciting new stuff, which, in my opinion at least, it fails to do.
Edit: I also noticed, that they put in Lock-On marks, so you can see what is in your auto-lock. Could mean that they are really reaching the phase, where it's simply "Put in everything we haven't put in yet. The foundation stands.".