CorelCAD Mobile still says, "coming Soon" on the Corel website.
How soon is "soon"?
CorelCAD Mobile for Android is actually available already - as an open beta.
CorelCAD users are invited to visit the link below and sign in with a Google Account. This will allow you to access the beta on your Android device.
https://play.google.com/apps/testing/com.corel.corelcadmobile
...there's more news around CorelCAD Mobile to be expected later this month.