The ASO routedescription quotes longer specials and shorter liaisons. It also quotes multiple marathon stages for the bikes.
Mechanics and looking after the bike should be of importance as a result of multiple marathon stages
Altitude (my guess) is going to be a bigger factor than ever looking at the map. Surely the high altitude salt flats in Bolivia will be showcased.
ASO makes mention of a Bolivian stage being run in a different format, opening possibilities For the future. Hmmm......any guesses? A non timed day maybe, but with mandatory waypoints and a max time allowed (just my guess).
I am surprised to see Peru not included, those opening stages last year looked great. I suppose with the new Inca rally there in Sept...