Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Holden ran a test batch of them many months ago to get consumer feedback. I saw one a few weeks ago as well. This is normal practice for new colours.
Components for the colors Poison Ivy and Voo Doo were sourced from a factory in Japan that was destroyed in the tsunami in 2011, which is why those popular colors were dropped from MY12.