Volatility 3 is a completely open collection of tools,
implemented in Python under the Volatility Software License,
for the extraction of digital artifacts from volatile memory (RAM) samples.
This release is the version of Volatility 3 which can be found here.
It is taken from the source code available as of 2021-01-27.
Due to the way in which the previous packages were named, you will need to remove the older version and install this version by hand with the following on Fedora and CentOS/RHEL 8:
sudo rpm -e Volatility3 --nodeps; sudo dnf install -y --refresh Volatility3
And this on CentOS/RHEL 7:
sudo rpm -e Volatility3 --nodeps; sudo yum -y install Volatility3