One of the highlights of Ubuntu Kernel Team’s latest newsletter is the fact that work started on the building and testing Linux kernel 4.13 for Ubuntu 17.10, and it looks like users can already install the second Release Candidate (RC) milestone announced by Linus Torvalds last week. Canonical plans to ship the final release of Ubuntu 17.10 with the Linux 4.13 kernel, but, for now, the current daily builds and the recently released Alpha 2 milestone for opt-in flavors are powered by the Linux 4.11 kernel packages of Ubuntu 17.04 (Zesty Zapus), yet the Linux 4.12 kernel is available in the staging repository.