After roughly 4 years the team behind the Tales of Vesperia PS3 project today released its first english patch. It comes in two flavours:
1) ISO patch: Users who are capable of running homebrew can use a patch tool that patches the required files from a Vesperia ISO
2) For users who can't run homebrew on their PS3 systems the team has prepared an online translation to follow while playing Vesperia in japanese
The game has been fully translated except skits and costumes from DLC. More information and instructions can be found at the homepage of the project below.
Source