Yup, that title says it all. Here is the quote from MSNBC.
Benedict XVI will activate the illumination from his apartments in the Vatican Apostolic Palace. He will touch the screen of a Sony “Tablet” with an “Android” operating system which, via the Internet, will transmit the command to switch on the electric current to the tree.
Considering Sony has recently released an Android tablet called the “S”, I guess this means it is now officially approved by the Vatican.