Thanks. I have contacted them since arriving onshore and given them my address and phone number and they emailed back to say they had received it, so that should be sorted.
My application date was only in October 2010, so I'm probably only due the paperwork in late September/October this year.
Does the change in visa involve submitting a bunch of documents like with the original application? My initial application was defacto, but we have subsequently got married.
Matt