First things first. An Indri, aka a Babakoto, is a very large lemur. Ubuntu 21.10, Impish Indri, is Canonical’s latest Ubuntu Linux release. It’s the short-term — nine months of support — predecessor to the company’s next long-term support (LTS) version, Ubuntu 22.04.

Source: LXer – The newest Ubuntu Linux, Impish Indri, arrives