Curious to hear about these .Net Enterprise devs that are not using RDBMS. It is still very much the status quo even with services like Azure DocumentDB around.
When you get a list of solid points about why Java won't be displaced and the response is watch this space, it reminds me of the folks saying "this is the year of the Linux desktop" without pointing to actual improvements coming to life.
The "new" .Net CLR really only has a compelling story if you are already a .Net shop. Nothing in the new Core and Standard implementations gives you something new if you are outside of it.