The petal patch was released today (23/09/05) but just before the release, trading was disabled. I personally think it was a bad time to release the petal patch as nobody can trade for it...also, I think casinos and trade rooms will be a bit empty until trading is back up, then casinos and trade rooms will be booming with business for the trades of petal patches! Have fun!
P.S. Habbo AU has waited for the petal patch for a LONNNNNNNNNNG time so it is a happy day for Habbo Hotel Australia. :p