Woohoo, you now have a couple of new titles to play with. Hooray!
It seems that they only appear after a post or something though, because some people have received their new titles and some haven't. :S
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Since the hierarchy of some titles has changed, we've decided to post some of them here just for reference.
0 - Student
50 - Genin
200 - Chuunin
350 - ANBU
500 - ANBU Leader
750 - Jounin
1000 - Missing Nin
1500 - Hunter Nin
2000 - Mist Lord
After that, there are a bunch of new ones. Happy hunting :S