Some Ninjas change their moves when upgrading stars, some don't.

Do:
Naruto (Twice)
Sasuke (Twice)
Sakura
Hinata
Shino
Kiba
Shikamaru
Ino
Choji
Neji
Lee
Tenten
Gaara
Temari
Kankuro
Haku
Kimimaru

All other characters that have been released don't change skills when upgrading stars, unless Konohamaru upgrades, but I haven't seen that event. ;P