It was very exciting to see how far Stephen Pope has come already to now release v2.0 of the Sitecore Publish Service built on .NET Core. It is now to the point that the recommendation from Sitecore is to add it to ANY Sitecore instance! I've downloaded it already and can't wait to dive in!
Version 1 of the Advanced Site Provider for Sitecore is now released on Github. It enables the usage of separate sites, initially limited to sub-domains, with no configuration nor any special content items!