Thunderbird 1.5.0.x End-of-life

Thunderbird 1.5.0.x will be maintained with security and stability updates until October 18, 2007. There will most likely only be one more release from Gecko 1.8.0.x branch, which is version

Lightning support will most likely to be dropped for Thunderbird 1.5 after Lightning 0.7 is released. The Calendar developers are awaiting feedback over this.