Looky here. Apple retailer ClubMac’s 500 GB Time Capsule page is currently NOT showing an image (shown here) of a 2 TB Time Capsule retail box in its “Product Detail” section. At one point, it apparently was showing such a box. Apple’s Time Capsule combination wireless router and network-attached storage drive is currently available only in 500 GB for $299 and 1 TB for $499.
It may turn out to be real. 2TB 3.5″ hard drives have recently become available, so why not? The original source of the image used on ClubMac’s site is unknown.