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Depends on the version you're using whether there's a new one.
But as long as you're using steam, you're always using the newest version. If you're not using steam, when there's a new standalone version out it's normally anounced in a thread in the news board: http://forum.toribash.com/forumdisplay.php?f=35

You don't need to make a new thread everytime to ask this as you can see. Closing.