I put my deposit down in October 2022 then signed and received my contract on 2/12/2022.
My dealer assured me (at least for this dealership) the signing date didn't matter as they internally determined the allocation based on the initial deposit date. He showed me a full list of the deposits...
https://www.tarmaclife.co.nz/honda/first-drive-of-the-new-2023-honda-civic-type-r/
https://www.driven.co.nz/reviews/honda-civic-type-r-first-drive-say-hello-wave-goodbye/
69,000NZD + ORC. Fingers crossed Australian pricing is somewhere near that