Late last night on my Xbox 360 Spotlight section of the Dashboard I noticed a video with the Modern Warefare header.
To my surprise it was a video of the next Xbox 360 bundle from Microsoft.
Just a note this is not a permanent SKU nor will they be selling a stand alone 250GB HDD, according to Major Nelson in this video.
Video recorded via Qik on my iPhone 3G
250 GB Xbox 360 Limited Edition