The new model is available for $499 from Apple.
Rumors of a 2TB Time Capsule first broke this April, when a picture of a box with the expanded capacity first appeared at ClubMac. At $499, the 2TB model has replaced the price point of the 1TB model. The lower-end Time Capsule is now available for $299.
Earlier this year, the company introduced new AirPort Extremes and Time Capsules with dual-band support. The new models allow simultaneous 2.4 GHz and 5 GHz dual-band networking. With dual-band, base stations can simultaneously support iPhones and other 802.11b/g devices operating at 2.4 GHz, while also broadcasting 802.11n wide signals in the 5GHz band to maximize throughput for notebooks and devices such as Apple TV.
Time Capsule drives were also made accessible over the Internet for MobileMe subscribers. Additionally, the new Guest Network feature allows users to set up a secondary network for friends and visitors with Internet-only access without handing out a WiFi password.
Time Capsule pairs the existing AirPort Extreme with a hard drive to serve as a backup appliance for Leopard machines running Time Machine, in addition to acting as a simple file and print server. It is offered for both Mac and Windows users, although Windows PCs (or Macs not running Leopard) won't have Time Machine and therefore will access it only as a regular file and print server.