Stellar released Horizon v0.22.1 with support for Stellar-core v12.0.0, introducing a new path_payment_strict_send operation and disabling the inflation mechanism. The release includes updates across all major SDKs and establishes a timeline for testnet upgrade on 10/14 and public network validator vote on 10/28.
The Stellar Development Foundation released Horizon v0.22.1 to support the upcoming Stellar-core v12.0.0 protocol upgrade. This version contains no breaking changes but enables support for Protocol 12, which introduces a new path_payment_strict_send operation and disables the inflation mechanism. The release includes coordinated updates across JavaScript, Go, Java, Python, Ruby, Scala, C# .NET, and iOS SDKs. The rollout timeline includes testnet upgrade on October 14 at 1600 UTC and a validator vote on October 28 at 1600 UTC for public network upgrade. Validators can schedule their upgrade votes immediately using the stellar-core HTTP command, and the SDF encourages all operators and developers to install the newest versions as soon as possible.
