While an official release schedule isn’t yet set in stone for Ubuntu 18.10 (Cosmic Cuttlefish), as you might have heard lately, the Alpha 1 & 2 and Beta 1 milestones will be dropped entirely for this cycle for all flavors, including Kubuntu, Xubuntu, Lubuntu, Ubuntu MATE, Ubuntu Studio, Ubuntu Budgie, and Ubuntu Kylin. The “Final Beta” milestone, for Ubuntu, or “Beta 2” for opt-in flavors was replaced as well for this cycle, with just a Beta release, which will hit the streets on September 27, 2018, for Ubuntu and all of its official flavors. After that, the final release of Ubuntu 18.10 (Cosmic Cuttlefish) should be released on October 18, 2018.