• Arrington says that CL2 looks like it is a long way from being ready for launch.



• 200 people are beta testing, and sworn to secrecy.



• Yahoo briefly had access, but informed Google.



• CL2 is closely integrated with Gmail.



• CL2 has subscription feeds for iCal and XML.



• CL2 has event creation, search, sharing, notifications (including email, SMS, and popups).



• Google is not just creating personal calendars or group calendars, but creating a searchable events database. Included in that is a public webpage (for public events) to share details.



• CL2 has keyboard shortcuts.



• You can choose to make your calendar public or private, or just show what times you are busy.



• You can add other calendars by searching public calendars, friend's calendars, holiday calendars, or by entering a public calendar address (iCal or Atom).

Visit the InsideGoogle blog.