Classic extension with 1Password 8

Are there beta versions (which work with 1Password 8) of the classic extension? https://support.1password.com/cs/1password-classic-extension/#step-2-install-the-1password-classic-extension

All I could find were these: https://support.1password.com/betas/#install-a-beta-release-of-the-1password-extension

But I really like the classic extensions which need access to the desktop app.

Thanks!