A new tool, Kali Linux Package Tracker allows to follow the evolution of this distro with email updates and a web interface. It can also help in identifying which versions of various tools and packages are in the repository.
Kali Linux is an Open Source project which incorporates more than 300 penetration testing and security auditing programs with a Linux operating system. This solution enables IT administrators and security professionals to test the effectiveness of risk mitigation strategies.
More info and downloads: www.kali.org