No specific info about version 4.0. Please visit the main page of Keychain Access copy on Mac Informer.
Info updated on:
Open-source initiative to bring OpenPGP to Apple OS X in the form of an easy installer package.
At least 260x better than Keychain Scripting.
This app keeps your default keychain password in sync with your login password.
Keep all passwords and confidential information safe via Keychain.
The Constructor tool which acts as the build server for Dringend application.