Are there any plans for full integration of Thunderbird's calendar with iCloud Calendar? I still have to use a web browser to access iCloud Calendar when on Windows, and I don't want to use Outlook.
There are a few blog posts floating around that explain how to extract your iCloud CalDAV access credentials in order to add iCloud calendars to Thunderbird. Last I checked there is no nice GUI for setting that up, if that is what you're after.