New in v0.8:
New Task mode with quick display of current tasks, task preview pane, and ability to filter displayed tasks; new icon set and reworked menu structure; experimental support for viewing remote calendars offline; event list (aka "unifinder") for selecting and sorting current, future and past events; totally overhauled alarm dialog; easy conversion of mails, events and tasks into each other; visual overhaul for the today pane; Release Notes - Last Updated: 04.04.08 (v0.8)
New in v0.7:
New user interface (now much easier to switch between the mail and calendar parts of Thunderbird), redesigned event/task dialog with much cleaner user interface and additional functionality, Today Pane with quick overview over your current tasks and upcoming events, improved reliability and performance, numerous usability improvements; Release Notes - Last Updated: 11.26.07 (v0.7)
New in v0.5:
"Much more polished user interface" in the calendar views, better integration with Mozilla Thunderbird, ability to send and receive event invitations via iMIP/iTIP, working hours option reinstated, automatic migration of data (in Sunbird 0.2, iCal.app, and Evolution), improved printing functionality, support for Google Calendar (via the Google Calendar Provider extension), improved reliability and performance, numerous usability improvements; Release Notes - Last Updated: 06.28.07
New in v0.3.1:
24-hour views for displaying entire day (as opposed to just a few hours),
alarms to notify you about events or tasks, ability to reload network calendars, improved localization support, improved reliability, numerous performance improvements, timezones have been updated to include the Daylight Savings Time (summer time) changes passed by the U.S. legislature in 2005 (v0.3.1); Release Notes - Last Updated: 03.01.07
Pros: Close integration of calendaring into Mozilla Thunderbird, quick and easy setup and access to appointments and to-do tasks
Cons: This one's just a trial run, with lots of kinks to be fixed — and important features to be added; integration with Thunderbird still a work in progress; manual installation process through Thunderbird can be tricky for first-timers
