Closing this issue. Spoke with Andrew B (OpenZeppelin) on Telegram. Here was his response:
"The proxy contracts have been moved to OpenZeppelin Contracts which has Solidity 0.6 and Solidity 0.7 versions:
Closing this issue. Spoke with Andrew B (OpenZeppelin) on Telegram. Here was his response:
"The proxy contracts have been moved to OpenZeppelin Contracts which has Solidity 0.6 and Solidity 0.7 versions: