TACEO and the Aztec Foundation have announced a partnership to develop a Private Shared State (PSS) on Ethereum, aiming to enhance privacy and security in blockchain applications. The PSS will enable multiple parties to jointly manage and compute over a shared private state, with updates and proofs recorded on-chain. This initiative leverages TACEO's coNoir toolkit for improved developer usability and incorporates post-quantum security measures. The collaboration merges TACEO's multiparty computation capabilities with Aztec's privacy-focused Layer 2 solution. According to TACEO CEO Lukas Helminger, the PSS allows for arbitrary computation on encrypted data and maintains a persistent, updatable private state, setting it apart from existing MPC and ZK-MPC solutions. The system is currently undergoing security assessments and is poised to support applications such as trustless financial markets and on-chain gaming.