Yes, "What's New" can extract the info from piCal, and it seems like there is an option to read RRS from piCal(see here...), but the question remains - how could I read into one central calendar data from several calendars on different Websites, where each entry from these individual calendars would go into a category representing that particular calendar?

In other words - I have a company calendar, and each division has it's own calendar on a separate Website. In the company calendar I would like to consolidate those separate division calendars, so when user goes to the company calendar he can see events from all divisions.