To jump-start interest in iGoogle gadget development, Google has opened a sandbox for developers. Google has also also launched an updated developer website which guides developers through building and distributing gadgets to iGoogle's growing audience.
iGoogle's new features will include left navigation, a maximized or "canvas view" option for gadgets, and social features for gadgets using the OpenSocial APIs. These social features for gadgets will include a friends list and activities displayed through a special updates gadget. The features and functionalities as they appear in the sandbox are meant for development purposes only, and may not reflect the end consumer experience.
A video for developers on the iGoogle sandbox is available.