As of a few months ago, there's been rumors about a Sony-exclusive From Software title, known as "Project Beast".
From Software is known recently for developing Demon's Souls (a difficult action RPG for the PS3, which sold really well despite a small advertising campaign) and Dark Souls (a not-quite-sequel due to copyright issues; still great). They're also the developers of Armored Core and King's Field.
Some supposed screenshots popped up, which made it look like another Souls game.
Then this "leaked" video appeared...
Do you think this is real?
In my opinion, if this is real, NOTHING will top Sony's E3 presentation this year, unless the Smash tourney is really hype.
Post-E3 edit:
We got this trailer. I'd be more impressed if some gameplay was shown.
Miyazaki said this game won't have shields, which makes for a noticeable change in playstyle from previous Souls games, but apparently, the evasion is better.
[mod note: Your first link in the first post is broken because Youtube took down the vid.]
Looks pretty cool. I hope it gives the PS4 a good-looking title which isn't too terribly unoptimized, and actually feels current-generation.