Not much is known about the upcoming Comet Lake CPUs from Intel. Leaked benchmarks point out that these models are to replace the existing Whiskey Lake chips, and will still use the 14 nm manufacturing process. ECS confirmed that the Liva Z3 Plus will be available in 2020 with support for Amazon Alexa.
https://www.notebookcheck.net/ECS-showcases-Liva-Z3-Plus-mini-PC-with-Intel-Comet-Lake-CPUs.423015.0.html