Thunderbird update to 38.3.0 - 29/09/2015

Thunderbird was updated to v38.3.0 yesterday, 29/09/2015. You can get the update via the program - Help>About Thunderbird>Check for Updates or it'll let you know that an update's available. You can also download the English (British) version of the program here:

Download Thunderbird in your language — Mozilla

Release Notes:

Thunderbird — Notes (38.3.0) — Mozilla

Thunderbird update to 38.3.0 - 29/09/2015