The rumour has it that the date for Lan Chile and Aer Lingus joining 1W is June 1.
Going to Easter Island on your RTW trip?? Isn't that a bit of a dead end? I've heard plenty of bad reports about Lan Chile from travel agents who I know pretty well (they've said that even Olympic is better than Lan Chile) and flights going to Easter Island are also known as "llama hoppers" which also refers to pax and service on board. Hope you like travelling in "no frills - suck it up" class.