The much-anticipated Vasil hard fork has been completed on the Cardano testnet, bringing it one major step closer to becoming a reality on the mainnet and promising broad performance upgrades.

Project developers, stake pool operators (SPO) and exchanges are now encouraged to deploy their work on the testnet to ensure integrations run smoothly when the mainnet gets the Vasil treatment in about four weeks.

Once completed on the mainnet, the Vasil hard fork will allow faster block creation and greater scalability for decentralized apps (DApps) running on Cardano. Input Output HK (IOHK), the organization that produced Cardano, said in a Sunday tweet that in addition to the performance upgrades, developers would benefit from “much-improved script performance and efficiency” and lower costs.

Vasil will also enable interoperability between Cardano sidechains, one of the main features developers intend to launch in the current Basho phase of the blockchain’s development. Basho is the fourth development phase for Cardano that focuses on scaling and will be followed up with the Voltaire phase, in which governance will be the main focus.

IOHK also noted that there would not be a proposal to hard fork the mainnet until “ecosystem partners are comfortable and ready,” but it is expected to come in about four weeks.

The previous phase, Goguen, saw the launch of smart contract capabilities on Cardano, which decentralized finance (DeFi) developers took advantage of by launching dozens of decentralized exchanges (DEX) and DeFi protocols, according to ecosystem tracker Cardano Cube.

Related: Ethereum fork a success as Sepolia testnet gears up to trial the Merge

Cardano’s top DApp with $49.7 million in total value locked (TVL) is currently the DEX WingRiders, according to the DeFi data compiler DefiLlama.

The testnet hard fork has done little to move Cardano (ADA) as it is only up 0.1% over the last 24 hours to $0.45, according to CoinGecko.