Starting today, Thunderbird version 3.0 will ask users if they want to upgrade to Thunderbird version 3.1. We put this upgrade prompt in Thunderbird so that users are notified when a new version is available.

- deferring the decision for 24 hours (“Later”),
- declining the offer (“Never”), or
- accepting the free upgrade (“Get the New Version”).
The offer screen appears after 60 seconds of keyboard inactivity to ensure that we don’t interrupt anyone’s current work. If a user declines the offer and later changes their mind, they can get the upgrade at any time by selecting “Check for Updates” from Thunderbird’s “Help” menu.
In the near future (perhaps as soon as next week), we will be providing a similar notification to our Thunderbird 2 users. In addition to the new search tools and tabbed email, Thunderbird 3.1 adds several features to help with the transition from Thunderbird 2 and from Thunderbird 3.0.
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