iCal 1.0 Release

After its preview, iCal 1.0 was officially bundled and released as a core application with Mac OS X 10.2 Jaguar. It featured a clean interface, multiple calendar support, and .Mac integration for publishing and sharing.

Significance

This marked the first time Apple offered a native, fully integrated calendar application as part of its operating system, completing a crucial piece of its 'digital hub' strategy and setting a new standard for desktop calendaring.