>>56707207There probably is but being able to both read Japanese and knowing the content of the games well enough to easily spot differences in revisions while browsing the SVN seems to be such a stupidly highly specialized skillset that very few people are doing it. Despite the data mines being so bountiful you could trip over new content, dialogue discoveries are very slow to be posted publicly.
Speaking for myself, I don't plan to look at XY at all anytime this year unless someone else posts the message data. Based on my own discoveries in BW (I literally have too many to post in a coherent way and am focusing on developing a long-term resource for collating) I highly recommend anyone who wants to seriously take a crack at XY to do so. You won't be disappointed.