Ethereum developer BarryWhiteHat has reported significant progress in the development of private smart contracts on the zkEVM platform. Developers can now utilize Solidity code, compiling it with specific tools to create private smart contracts. Despite these advancements, achieving a private global state remains a challenge due to the need for content verification. This limitation affects applications like Uniswap, which require input/output functionality for full privacy. The focus is on implementing private user state smart contracts by introducing pstore and pload opcodes in reth.