Ubuntu 18.04.1 LTS is the first of five scheduled point releases that Canonical plans to release for Ubuntu 18.04 LTS (Bionic Beaver), and it includes all the latest software and security updates that were published on the official repositories since April 26, 2018, when Ubuntu 18.04 LTS was unveiled. Unfortunately, Ubuntu 18.04.1 LTS doesn't bring an updated kernel, nor graphics stacks because there's no new Ubuntu version to backport them from. Ubuntu 18.10 (Cosmic Cuttlefish) is still in development, due for release on October 18, 2018, and it's currently running the same kernel and graphics stack as Ubuntu 18.04 LTS.
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