It's a dvd wallet of season 2, including 3 dvds previously not released in Australia ("What a Croc", "The Big Brawl" and "City at War"). "Ultimate Ninja" was the last dvd released. I've scoured my work's database to find any more possible upcoming releases, but there's nothing yet. But if you're in Australia, have a look in Toys R' Us (possibly other retailers as well) for these season 1 and 2 dvd sets. $48.99 each, but worth the extra season 2 dvds at least.
I know what I'm gonna be doing this weekend!