BusyCal 1.3 has been released! This version includes many new features and bug fixes, and is localized into several languages. Here's a summary of the new features:

• Localization — Localized into French, German, Italian and Dutch. Other languages are in the works.
• Week Numbers — Option to display ISO 8601 week numbers in the calendar and mini months.
• Birthdays calendar — BusyCal now has its own Birthdays calendar that syncs directly with Address Book. And you can optionally display a person's age in the event title (e.g. John's 39th Birthday).
• Address Book integration — You can drag People and Groups from Address Book (or the new Address Panel) into the calendar to create a meeting, or drag them into the To Do List to create a To Do that is linked back to that contact in Address Book.
• Drag & Drop improvements — You can drag To Dos into the calendar to transform them into Events or drag Events from the calendar into the To Do List to transform them into To Dos. And the week view now supports drag & drop to and from the timeline to convert all-day events to timed-events, and vice versa.
• Apple Help — Help files are now available from the help menu.

BusyCal users can update by selecting Check for Updates from the BusyCal menu. New users can download it from http://www.busymac.com/download/BusyCal.zip