The Xbox 360s sales since the revision came out aren't following a typical short term sales curve. There has to be something pushing the Xbox 360 to sell more, especially as the supply of discounted Xbox 360s have seemed to have diminished rapidly. Even with people buying the console because RROD/reliability concerns have been diminished or because of the addition of Wifi or the reduction in noise doesn't quite produce a satisfactory explanation, there could be more to it.

Two points of interest:

1. The Xbox 360 had a 30k boost from what I recall after E3 2009 from Natal hype as it was called at the time.
2. Halo: Reach is ahead of Modern Warfare 2 in pre-order sales at the same number of weeks before release.

Since the Xbox 360 is having quite a lot of promotion of Kinect with physical demonstrations everywhere, perhaps people are already buying Xbox 360s because they have already become enthused with Kinect. These are people whom are interested in both the core game library and obviously Kinect for whatever reason they want it for. We've already seen people buying 360s based off some media hype and a few trailers so why not based off a physical demonstration?

People have assumed that Halo: Reach wouldn't sell consoles. However this is countered by the fact that all three previous Halo releases pushed hardware significantly, Halo 2 inclusive. Modern Warfare 2 also managed to move consoles inspite of the fact that it was merely a sequel to a multiplatform game and it was the 5th Call of Duty released on the Xbox 360 this generation. However since Halo: Reach is exclusive, it ought to have more system selling potential than a multiplatform title as it has the potential to draw owners of other consoles to buy an Xbox 360 as its not available anywhere else. Because Halo: Reach is a multiplayer intensive release, the greatest point of interest is at release when a large number of people are playing the game. So anyone who missed Halo 3 whom is interested in multiplayer wouldn't be inclined to pick up a 360 for that title once people moved on to other games.

NO!

it's Dance Central... Dance Central is pushing 360's.. I don't care about Kinect.. but I do about Dance Central!

Yeah Halo Reach is gonna move quite a few consoles especially with the limited edition Halo Reach 360.

Mw2 Limited Edition moved 100K Consoles so Reach should do that easy.

After I came home from the Canton, OH demo I was basically impressed with the sheer number of people who were wanting to get the Kinect.  Dance Central will be the biggest seller on Kinect without a doubt.  And if Kinect does as well as I think it will, it possibly could do 3-4 million in sales within its first 6 months.  

As for the boost in console sales because of Kinect and Reach, I totally believe it.  Those Kinect demo tours are really getting people pumped up for Kinect and lots of those people are Wii owners.  Or at least the ones that were standing near me in line.  So if Kinect wins over a few of the Wii crowd the skies the limit.

If Microsoft throws plenty of money at advertising both Kinect, and Reach I have no doubt things will be great for Microsoft this Christmas time.   And we may even see sell outs of Kinect bundles like we did for the Wii.  That would be simply unbelievable if you ask me.

***** EDIT*****

The more Microsoft can get these Kinect tours out there the better.  They are great ideas and if Microsoft knows whats good for them they will expand them "EVERYWHERE".  Have them at state fairs, outside concerts, possibly  outside pre-season football games.  The more people see it work, the more consoles sold.  It's that simple.  

I said I'd write a long peice, but I really don't need to for what I'm going to say.

The majority of new buyers are peopel rebuying them, I know you don't wanna accept this but IMO this is where the boost is coming from. It's ok though ...!

When Reach comes about, it'll draw in new buyers. But it's when Kinect hits when new buyers will truly come into the fold, and continuing into 2011.

not a significant amount, but perhaps 10%, obviously that's gonna ramp up soon.

probably, there's a few doing that, but most of the people who DON'T own a 360 yet, don't know when Halo:Reach comes out or Kinect comes out until they see it on television...there's no way that a Halo game or Kinect can affect sales like that.

While I do agree it makes more sense to buy a kinect bundle, a lot of those people coming from the Kinect demos may be purchasing them to get ready.  I don't think its a huge number either 10% sounds fair.

I do think there will be a significant boost once they both arrive though.

Makes sense, the $199 4gb Xbox 360 Slim was stocked at my neighborhood Gamestop. So yes, I believe individuals are already buying the Arcade Slim in anticipation for Kinect.