Google has just released a new version of Google Talk for the iPhone and iPod touch.

Users need just to go to, sign in and start chatting. Google Talk runs entirely in the browser so there's no need to download or install anything.

However, in order to receive instant messages with Google Talk on your iPhone, the application needs to be open in the Safari browser.

When users navigate away to another browser window or application, their status will be changed to "unavailable" and the Google Talk session will be restarted when they return.

The Google team responsible for the service says they have tried to keep the design as faithful to the desktop experience as possible, with quicklist selections, contact search and multiple conversation management.