Yes I am aware that manufacturing will cease. I am also aware that the information in post#64 said Sandman launches in April and two months later production begins.
Best guess is that the orders that closed in February were for an initial run so Holden could gauge some response.
The GTS Maloo was openly stated as a production run of 250 only. The Lowndes Commodore was capped at 233, one per dealer. The Sandman has no limits and says Dealer order only.
There is no logic to publicly launch a model two months after the doors on orders have closed, then wait another two months of telling the public that X is the total amount being made and no more will be made.
You can bet that if between the April public launch and the start of production, a Dealer receives a flurry of interest and people waving money around, that the production run will be increased.