The Graph to Complete Horizon Testnet Upgrade in October

The Graph is entering a new phase with the upcoming completion of its Horizon Testnet upgrade in October. This milestone will enable a unified framework where Subgraphs, Substreams, Token API, and other data services can operate seamlessly within the same decentralized protocol.
Refer to the official tweet by GRT:
The Graph@graphprotocolOct 23, 2025Horizon is a new chapter for The Graph.
In the coming days, The Graph’s Horizon Testnet upgrade will be complete, setting the stage for a multi-service future where Subgraphs, Substreams, Token API, and new data services can all run on the same decentralized protocol.
GRT Info
The Graph is a decentralized protocol designed for efficient data indexing and querying from public blockchains. One of the functional elements of The Graph is subgraphs. Subgraphs are created by third-party developers to receive and index data from specific blockchains.
The Graph (GRT) is a utility token used within The Graph ecosystem. The Graph Foundation issues grants in GRT to subgraph developers and other tools. GRT holders can also delegate their tokens to curators or indexers to participate in network security and receive a share of rewards for curation or indexing.