# v10.2 migration

Version 10.2 introduces a new 30-band depth system for price impact calculations, replacing the previous single `onePercentDepthUsd` value. This provides more granular control over liquidity depth at different price levels.

> **Notice:** These documents are currently in progress. For any questions or clarifications, please contact the team.

**NOTE:** Live on all networks as of 10/21

Testnet:

* Diamond contract: <https://louper.dev/diamond/0xB4F1B18b5679B42F2956dCBff3D7823A61F347C9?network=arbitrumSepolia#facets>
* Backend endpoint: `https://backend-sepolia-release.gains.trade`

SDK:&#x20;

* Version: <https://www.npmjs.com/package/@gainsnetwork/sdk/v/1.5.0>
* Guide: <https://github.com/GainsNetwork-org/sdk/blob/feat/v10.2/docs/v10.2-migration.md>

Contracts changelog: [v10.2-update](https://docs.gains.trade/developer/technical-reference/contracts/changelogs/v10.2-update "mention")