I've posted a new blog Introducing ArcGIS Companion - New Mobile App for your Organization. This blog introduces you to the new mobile app and provides you brief list of features. You can also find links to download the app in the various stores. Give the blog a read, then come here to discuss it.
Sathya, I'm trying to view the blog, but I'm prompted for a password.
This seems to be fixed now..
Do you have plan when ArcGIS companion will support ArcGIS Enterprise?
We are actively working on it. It will be supported for Enterprise 10.7 and above due to the fact that older portals will not recognize the app as a trusted app to allow sign in.