According to ChainCatcher, Starknet officials posted on the X platform: "Staking involves locking the user's STRK tokens in the Starknet staking contract to obtain rewards proportional to the stake. Users can participate as stakers (need to run a full node) or delegators (STRK tokens can be delegated to stakers). The current goal is to launch the first phase of staking: launch on the testnet in September; launch on the mainnet in October."