In summary:
The wait for an exact date of the launch of TRON 4.0 is finally over with Justin Sun revealing that the upgraded Mainnet will be launched on the 7th of July. Justin Sun made the announcement via Twitter with an additional open letter available on Medium. Mr. Sun’s tweet announcing the release date of TRON 4.0 can be found below.
In the elaborate open letter, the Founder and CEO of Tron explained 4 key features of the highly anticipated TRON 4.0 upgrade. The four features include:
TRON 4.0 will be the first blockchain platform to host a smart contract privacy protocol. The smart contract will be open source and available to any developer in the Tron ecosystem.
However, TRX transactions will not be private nor anonymous in any way. The team at TRONZ Foundation, who worked hard to deliver the smart contract protocol, explained that compliance with global regulations and policies is the main reason privacy is a stand-alone feature.
The [smart contract privacy] protocol will mark the first time for a smart-contract powered blockchain to implement zk-SNARKs…
TRON has been working steadily on developing a safe public chain in compliance with global regulations and policies.
Therefore the TRON 4.0 upgrade will not make TRX anonymous in any way, nor will it have added privacy features. TRONZ Smart Contract Privacy Protocol will fully support all TRC20-standard tokens on the TRON network, whether issued or not.
Developers can adopt the shielded transaction feature simply by implementing the smart contract.