Warframe Update 39.1.0 is now live, serving as a smaller certification update that introduces new content for players. This release primarily focuses on the debut of Caliban Prime Access and the latest round of community-created TennoGen cosmetics. The update has a download size of approximately 0.24 GB.

Caliban Prime Access
Caliban Prime arrives as a Warframe forged during the brief period of peace between the Orokin and the Sentients. This Prime variant features royal gold adornments, reflecting its origin as a collaborative masterpiece. The Lethal Progeny ability summons Conculyst, Ortholyst, and Summulyst units that are also decorated in gold.
Accompanying the Warframe are two new Prime weapons. The Venato Prime melee weapon was crafted from the bone of the Sentient Ur-Hatho and embellished by an Orokin luxurator. The Vadarya Prime sniper rifle serves as Caliban Prime's signature weapon, featuring a unique chain lightning effect. Enemies struck by the rifle have a chance to become lightning rods, attracting bolts that can jump to nearby targets.

Prime Accessories and Vault Changes
The Caliban Prime Access bundle includes the Neurovyre Prime Syandana, a Sentient spinal symbiote painstakingly embellished with scavenged gold. Also included is the Tauron Prime Regalia, which blends Tenno functionality with Sentient design aesthetics.
With this new Prime Access, several older items have been moved to the Prime Vault. Grendel Prime, Massater Prime, and Zylok Prime are now vaulted and will be available in a future Prime Resurgence rotation. Players who already possess Relics containing these items will retain them in their inventory.
Riven Disposition Adjustments
As is standard with each Prime Access release, Riven Mod dispositions have been updated. These changes affect the statistical power of Rivens for various weapons to maintain game balance. The full details of the August 2025 Riven Disposition changes are available on the official Warframe forums.
TennoGen Factions Collection
Update 39.1 also introduces a new TennoGen Factions collection, featuring community-designed cosmetics. This release includes a Corpus-inspired skin for Gauss, an Entrati-themed Syandana, Tenno-inspired armor pieces, and a new whip skin. These items bring various aesthetics from across the Origin System into players' arsenals.