iCloud3 v3 is now available as a Prerelease update to v2.4.7.
It has been in development for over 2-years and is now an HA Integration that is updated and configured on the Devices & Services screen. There are many new features that are described in the User Guide and in the description screens. See the Important Links below for a full list of the new and updated features.
Important Links:
Installing and Migrating from v2.4.7 - See here for instructions on migrating from from an older version.
iCloud3 v3 Documentation - It is still in process, does not include the latest updates to iCloud3 and can be found here.