Both Liberal and Labor have moved a long way to the right in recent years, so that the Tweedle D' effect has kicked in. If Rudd says he is intending to regain the centre, that says to me that he is conceding that the party has drifted too far to the right, and he wants to bring it back. A first step should be a small one.
In this interview he speaks of more substantial steps.

"These are human beings with an intrinsic dignity. When they go to the workplace, they're not just like a lump of wood or a piece of coal, these are human beings, and they should be treated properly as people with intrinsic rights."

I may be naive, it might just be 'make me Prime Minister' rhetoric, but I take hope from his election as Labor leader.