IGN has an article on NG3, which can be found here: http://xbox360.ign.com/articles/121/1214532p1.html

Some parts:

"Ninja Gaiden 3 will be the first full entry to the Ninja Gaiden series developed without Itagaki's oversight, putting the game in a position of great importance for the franchise. Can the series carry on without Itagaki's direction? I spent some time with the game at a recent press event to hopefully answer this question. 

From the get-go, it's clear that the team is trying to distinguish Ninja Gaiden 3 from the rest of the series. Ninja Gaiden 3 is a little more grounded than either Ninja Gaiden or its sequel, moving away from some of the more fantastical elements (dragonbone skeletons and the like) in favor of real world enemies and soldiers, a story where Ryu Hyabusa works for the UN, and taking on global threats in Dubai. The game's storyline also aims to "unmask" Ryu, giving it more of a personal tone and a chance for us to see his inner workings. 

However, what might be most disappointing to many fans of the series is the single-player campaign's lightened difficulty. My time with Ninja Gaiden 3's single-player mode was noticeably easier than it has been in past Ninja Gaiden games. The franchise has previously worn its toughness proudly, but Ninja Gaiden 3 takes a lot of effort to make the game more accessible. Your health recharges (your ninpo bar will regenerate your health after you take out a group of enemies), using your bow has a generous auto-aim feature, and killing off enemies is generally a lot easier. While there is a Hard mode that delivers some challenge with tougher enemies that hit harder, it's just not on the same challenge level as its predecessors. 

Depending on how you look at it, this could be a good or a bad thing. Some decried Ninja Gaiden's difficulty as an obstacle, so easier gameplay might serve to make it more accessible to a new audience. However, it's tough to imagine that hardcore fans of the series won't take issue with the easier feel." 

Personally I don´t like the direction Team Ninja is taking with NG3...as a big fan of Ninja Gaiden games (though NG2 disappointed me a bit), this game might be the first Ninja Gaiden I´ll skip.

Going to be easier? Quite the downer for the serious fans who enjoy the challenge.

Quite disappointing. Ninja Gaiden's only appeal to me was the difficulty. If I want to play an easy hack and slash I would much prefer god of war with it stunning set pieces and incredible looking enemies, then ninja gaiden with generic ninjas and almost comical looking bosses. Maybe they are trying to lure some casuals considering there hasn't been any big budget mass appeal hack and slash since well god of war 3.

This is what happens when you put games on Nintendo systems

You all should be afraid of any games that get diluted with a Wii U multiplat

just throw in some waggle-boobs and they'll forgive you(well atleast the PS3 fans)

the NES ninja gaiden 3 was the game that alienated longtime fans. it was EXTREMELY HARD.

A good game's a good game whether it's hard or not.

You can't really judge difficulty from a demo version, for multiple reasons.

I will either rent this game or wait for it to drop to 30 or 20 bucks.

This is sounding like the series will continue to take a nose dive in quality after the masterful first version. I do not mind having to play on hard to get mad difficulty, but getting rid of the goofiness and monsters will probably make the game generic.