Apple has updated iCal today to version 1.0.1. According to Apple, iCal 1.0.1 provides a number of performance and stability enhancements, and improved support for importing vCal and Entourage information and requires Mac OS X version 10.2.3. Apple reports that since the introduction of iCal in September, more than 1 million copies of iCal have been distributed and more than 200,000 calendars have been published online.