VideoCardz.com posted Leaked roadmaps confirm Coffee Lake-E/H/S & Cascade Lake-SP to remain focus in 2018 A quote from the article:

Intel in 2018/2019 The main roadmap confirms Coffee Lake-S to last until at least Q1 2019. Shortly after the rest of mid-range CFL-S SKUs become available

 Leaked roadmaps confirm Coffee Lake-E/H/S & Cascade Lake-SP to remain focus in 2018 @ VideoCardz.com