To be honest, my guess is that someone in Nvidia's PR fucked up and included year-old images, only to get screamed at afterwards.
This has been my impression so far, though I'm never one to turn down confirmation if it can be had.
I'd guess I'm a little more accepting 'downgrade-as-fact' since the confirmation of the blood_decals being removed and the meditation preview getting the cut (the latter not confirmed, but chronological look at footage seems to suggest as much.
More than anything else, I'm rolling around looking for my priority list for Mods as soon as Redkit drops and I can dig into that beautiful engine.