I don't see a lot of difference between the current trailer, and the one that was shown at E3 (last year I think?) gameplay wise. I'm not talking about visuals, though with that said, while the colours may be brighter than MGS4, the art style is still very much Metal Gear to me. Not only that, but Raiden just looked like he controlled better to me than he was in the E3 trailer we got some time ago.

As to it originally being a stealth game, I hadn't heard that from them, especially since it always seemed their marketing and the things they talked about were pushing the action side of things heavily. And frankly, I think if they had made stealth an option it would have simply been a waste. Nobody who played MGS4 and enjoyed watching Raiden slaughter Geko's or knife fight Vamp honestly watched those cut scenes and thought it would be cooler if he were sneaking around. The new trailer looked a lot more like we were getting to play Raiden as he appeared in MGS4, but taken to a whole other level in terms of intensity.

I guess maybe I shouldn't have said Kojima Productions couldn't have pulled it off. We're talking about the guy who created Zone of the Enders after all. But I don't think they could have done this particular type of action game as well as Platinum can. I mean, we're talking about the guys who made Devil May Cry, Viewtiful Joe, God Hand, Bayonetta, and Vanquish, among a host of other titles for Capcom and Clover (seriously, name a major title Capcom released in the last 15 years other than Street Fighter 4 and these guys basically created it). Action is basically what they do.