You’ll receive it no later then 31 January, after your order is shipped/completed. It’ll arrive as a gift in your battle.net desktop.
When you sign up for a 6-month subscription, you’ll receive the joy-bringing mount–Jade, Bright Foreseer-- in World of Warcraft and the ear-resistible Hoplet pet in Wrath of The Lich King Classic. If you’re currently on a 6-month recurring subscription with a future renewal date, you’ll receive the mount and the pet as a gift in your Battle.net desktop app at no additional charge no later than January 31, 2023 (must be redeemed by July 31, 2023).