In Zoroastrian tradition, Frashokereti is the final renovation of the world in which evil is defeated.
Zoroastrian eschatology describes a future transformation rather than an endless cycle of destruction and replacement. At the end of time, the savior figure Saoshyant helps bring about the final renovation. The dead are resurrected, judgment takes place, and the forces associated with evil are ultimately overcome.
A river or stream of molten metal is described in later Zoroastrian texts as part of the final judgment. For the righteous it feels like warm milk, while the wicked undergo purification. The renewed creation then becomes free from death, decay, and falsehood.
Frashokereti is therefore not simply the name of heaven. It refers to the cosmic restoration of creation. Chinvat is the judgment bridge, Asha means truth or order, and Angra Mainyu is the destructive spirit; all are related concepts but have different meanings.