Release Date
Forged in Redstone adds a set of speedy Redstone Tools and a set of Armor ideal for reaching high speeds.
Forged in Lapis adds a new tier between Stone and iron, with a high enchantability.
Forged in Quartz adds a set of Tools made from Quartz and a set of Armor ideal to fight Wither enemies.
Forged in Emerald adds a new tier between Iron and Diamond: Emerald. It's main use it's the ability to transfer villagers more easily.