There are 10 new Trophies that can be collected.

Bronze

Gender equality
Win 2 online events in a row, each one with a different gender driver (SP or MP)

Now it's really done
Win DLC tournament extension

Andes fight back
Win races on all DLC andes tracks in all modes

The trees are strong
Win an online event on all yosemite tracks

Still counts as one
Win an online event consiting of 5 or more tracks

Like a snail
Win a race without using boost

Bombproof
Win a detonator race without being blown up

Silver

Golden guy deluxe
Win all tournament gold medals including DLC extension

AI, human – doesn't matter
Win races on all tracks (including DLC maps) in all modes in multiplayer

Bomb disposal expert
Win 20 online detonator races with more than 5 players

http://www.ps3trophies.org/news/news-2370-DLC-Added--nail-d.html