Nintendo revealed that both Pokemon Brilliant Diamond and Pokemon Shining Pearl would be releasing on November 19th earlier this week along with Pokemon Legends: Arceus releasing on January 28th, 2022.
Amazon already has great deals for all three of the games as well as Pokemon Shining Pearl/Brilliant Diamond Double Pack, which are all quite cheaper than other Aussie retailers.
Just as a reminder, when you pre-order on Amazon, you not only get free shipping, but you also get a price guarantee, so if the game drops between you pre-ordering it and release, you get it at the cheapest price no matter if it goes back up (for instance if you buy it today at $68 and it drops to $63 next week, you will get it for $63 even if it goes back up). You also won’t get charged for the game until it ships.
The singular games are at least $11 cheaper than at other retailers including EB Games and JB Hi-Fi whilst the double pack is about $30 cheaper than other retailers, so it’s a no-brainer if you were looking to grab that.