Version 2 of iCal was released as part of Mac OS X v10 .4 , Version 3 as part of Mac OS X v10 .5 , Version 4 as part of Mac OS X v10 .6 , Version 5 as part of Mac OS X v10 .7 , and Version 6 as part of OS X v10 .8 .
Version 2 of iCal was released as part of Mac OS X v10 .4 , Version 3 with Mac OS X v10 .5 and Version 4 as part of Mac OS X v10 .6 .