Without any warning or announcement, three of the Wreckers packs have been released in America, a lot earlier than the scheduled release of November.
The odd thing is that it is the three packs that were revealed last to be released early - Springer, Twintwist, Bulkhead.

Ours are still listed for September, but I guess if you were really desperate, all three can be imported from Amazon America... but a lot more than what they were listed for on Amazon Australia.