The Blu-ray release of the final Spartacus season contains Extended Cuts as well, this time actually for every single episode even though there are less differences than there were in the previous seasons. Besides more plot, there's more sex, more violence, more dialog and also alternate scenes. There's any possible difference in it.

The Extended Version of Episode 3.01 contains 5 more scenes with a total difference of 37 seconds.

19:04
Crixus shows less mitrust to the blacksmith.
EX: 6 sec | TV: 2 sec

Extended	TV

29:19
Extended shot of Spartacus negotiating with the blacksmith.
EX: 4 sec | TV: 2 sec

Extended	TV

29:29
Ditto.
no difference

Extended	TV

29:37
The blacksmith still isn't convinced that he should help the slaves. Gannicus helps him make it happen.
12 sec

36:14
Gannicus and Spartacus are waiting for the others in front of city gates.
19 sec

The subsequent scenes show a different moon and night sky with green screen background. The scenes in the foreground remain unchanged though.