I'm still unclear as to whether the linux apps can be deployed to a docker engine running on a windows host, and, vice-versa, whether docker windows containers can be run on a linux host. The announcement seemed to be clear that both of these are the goal. But your GP post https://news.ycombinator.com/item?id=8458603 causes me to doubt.

Is there a missing comma in each sentence of the goal? It seems like there should be one after "use" or after "engine":

1) [after "use"] Package [on a Windows client] your Windows app in a docker container, use same tooling you would otherwise use [on a linux client], to deploy to a docker engine running on a Windows host Package [on a Windows client] your Linux app in a docker container, use same tooling you would otherwise use [on a linux client], to deploy to a docker engine running on a Linux host.

2) [after "use"] Package your Windows app in a docker container, use same tooling you would otherwise use to deploy to a docker engine [running on Windows or Linux], running [the packaging step] on a Windows host Package your Linux app in a docker container, use same tooling you would otherwise use to deploy to a docker engine [running on Windows or Linux], running [the packaging step] on a Linux host.

I added the implications I understood to highlight the difference the comma placement makes. If there is no comma it's pretty ambiguous / confusing to me on which platform the docker engine is running. I believe from this post of yours that I have misunderstood the announcement, and that windows apps will be able to be made into docker containers that can only run on windows docker engines.