Microsoft has just announced the successor to the storage-less Xbox 360 Arcade, the creatively-named Xbox 360 4GB, which features 4GB of internal flash memory, built-in 802.11n WiFi and a casual-friendly price of US$199.99.

In other Microsoft news, Kinect has officially been given a price of US$149.99, which includes the game Kinect Adventures. A bundle containing the Xbox 360 4GB console, Kinect sensor and Kinect Adventures game will also be available for US$299.99.

15 Kinect games will be available at launch for $49.99, including Kinectimals, Kinect Sports, Kinect Joy Ride and Dance Central. While that's an impressive number of launch titles, there's a distinct lack of games for the hardcore set, unlike Sony's PlayStation Move - which the Gizmag team thinks will be the motion-based gaming setup to beat.

The Xbox 360 4GB will arrive in North America on August 3rd, with Kinect making an appearance on November 4th.