Well, you've seen the announcement about the new book. WizKids is coming in next with figures specifically for it. They've announced a new Icons of the Realms miniatures set, and it's all about Baldur's Gate: Descent Into Avernus. There's even a pimped-out Infernal Machine you can get.
From the website:
Baldur’s Gate: Descent into Avernus features several new Devils and Demons for players to add to their collections.
In this infernal collection of miniatures, players will find many of the enemies and allies featured in Descent into Avernus. Battle the most powerful of the legion of devils, the Pit Fiend. Come face to face with demons like the Glabrezu and Merregon. Join forces with fellow adventurers like Reya Dawn. You may even challenge the fallen angel Zariel herself!
Collect all 45 figures from Baldur’s Gate: Descent into Avernus, the newest set of randomly sorted monsters and characters in our exciting line of D&D miniatures, Icons of the Realms.
Baldur’s Gate: Descent into Avernus fantasy miniatures come in two product configurations: the Standard Booster and the Standard Booster 8 Ct. Brick.
- Baldur’s Gate: Descent into Avernus Standard Boosters each contain four figures total: 1 Large figure and 3 Medium or Small figures.
- Baldur’s Gate: Descent into Avernus Standard Booster Bricks contain 8 Standard Boosters (32 figures total).