Nope its not Wonder Woman, WW came from the amazon and not a kryptonian spaceship. Its super girl.
CW's press release from the summer:
CW's press release:[div align="left"] [/div][font lang="en"][font lang="en"]Look, up in the sky: it's a bird, it's a plane! It's...Supergirl! This fall, Supergirl will be joining the lineup of burgeoning superheroes and villains in "Smallville." Supergirl is the latest DC Comics character to join the series that has previously welcomed Martian Manhunter, The Green Arrow, The Flash, Aquaman, Cyborg and Brainiac.[/font][/font]