Yes, it's new! Shinyoung (funny comedian that co-host Win Win with Taeng) who is really close to SNSD revealed in an event (LG Cooky Date event) that Taeng got braces.
And about plastic surgery, I don't have a thing against it. But I doubt any of the girls had surgery. Maybe except Yoona. Her nose looks different. Comparing now and her modelling pre-debut days.
Sunny isn't there because she joined SNSD last.
And I believe that the 2nd girl in the top (next to Fany) is T-ara's Soyeon.