Well I heard that too about season 10 being greenlit as well,but Welling,Durrance,Hurley have signed on.
The only full-time cast member since departure of Michael Rosenbaum as Lex Luthor is leaving the show,and that's Allison Mack that plays Chloe Sullivan/Watchtower,but if the ratings are driving the show it could change her mind,and she'll resign for another year. the storyline is leading more and more towards CK/Kal-El becoming Superman,but let's wait and see during season break when Smallville cast,and crew attend a few conventions like Comicon to see where the show's handlers want to go with it.
We've yet to see CK take flight,and 30TH century is just a ring jump away so there a stories left to be told if any proof is needed I point to "Absolute Justice" is one of the best two hour episodes that I've actually saw gave me hope that if the end result is him doning primary colors,and a cape or better yet a red Neo coat, blue t-shirt with father's symbol blue/red leather pants simlar to GA's togs.
What do you think of my musings?