A live Beta of the Bancor V3 protocol is running prior to its full mainnet launch. More information about the Beta can be found here. The Beta does not have front-end access, and all interactions will be possible only at the contract level or using Etherscan.
An initial audit of Bancor V3 has been completed by Peckshield, with additional audits by OpenZeppelin and Certora currently underway.
The following is a guide to interacting with the Beta smart contracts on Etherscan.
Make sure you are familiar with the concepts of V3, including depositing, withdrawing, the cooldown period and the withdrawal fee before you participate in the Beta.