This much we know about the upcoming season of Smallville:

• It will be the show's last.
• Allison Mack will only appear on a few episodes as Chloe.

As for teases, spoilers and guesses, The CW has provided us with the following press release. It lists Cassidy Freeman (Tess) as a series regular and it gives fans a couple clues about what's ahead:

Season 10 promises the classic reuniting of the timeless romance between Clark and Lois, and brings Clark face-to-face with his destiny as he overcomes his final trials and forges the iconic identity that will be known for all time.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.