Pi Network is preparing to roll out a major upgrade, moving from protocol version 19 to 23. The new version, built on Stellar protocol 23, introduces new layers of functionality and control for the blockchain. However, despite the technical milestone, market sentiment around PI remains subdued. Stellar-Based Protocol 23 Comes to Pi, But Market Says ‘Not Yet’ Following the recent launch of a Linux Node, the PI Network is set to move from protocol version 19 to 23
source: https://beincrypto.com/pi-price-flat-despite-pi-network-version-23-upgrade/