Canonical has announced a change in the packaging defaults for the various “flavours” like Kubuntu, Ubuntu MATE, Ubuntu Budgie and so on to exclude Flatpak and
Nazrul Hoda Nizami 
Canonical Unveils Real-Time Ubuntu: A New Era of Instantaneous Responsiveness
Business, industry, and developers with special requirements will be pleased to learn that Ubuntu’s real-time kernel is now generally available.
Canonical security subscriptions for Ubuntu Linux now available
Canonical’s Ubuntu Pro, a Linux security maintenance subscription service that covers hundreds of open-source programs and toolchains,
Get to Know Ubuntu LTS: The Operating System Built for Stability and security
Ubuntu LTS (Long-Term Support) is a version of the popular open-source operating system Ubuntu that is designed for use in both personal and commercial environments