Docs: What's new in 7.0 placeholder (#23987)

* Docs: What's new in 7.0 placeholder

* Updated makefile

docs/Makefile

 .PHONY: docs docs-test
 
-IMAGE = grafana/docs-base@sha256:63758b74e3990ab61e274f5e98da092d5c38378829dad0488aa97c59f0144f34
+IMAGE = grafana/docs-base:latest 
 
 docs:
 	docker run -v $(shell pwd)/sources:/hugo/content/docs/grafana/latest -p 3002:3002 --rm -it $(IMAGE) /bin/bash -c 'make server'

docs/sources/guides/whats-new-in-v7.md

++++
+title = "What's New in Grafana v7"
+description = "Feature and improvement highlights for Grafana v7"
+keywords = ["grafana", "new", "documentation", "7.0", "release notes"]
+type = "docs"
+[menu.docs]
+name = "Version 7.0"
+identifier = "v7.0"
+parent = "whatsnew"
+weight = -17
++++
+
+# What's new in Grafana v7.0
+
+Grafana 7.0 is coming. This article will soon be filled with highlights on what's new.
+
+In the meantime if your want to know more about what we have been up to and what is coming sign up to our online GrafanaCon conference.
+
+[{{< figure src="/static/assets/img/blog/GrafanaCONline.jpg" max-width="800px" lightbox="false" caption="GrafanaCONline May 13-29" >}}](https://grafana.com/about/events/grafanacon/2020/?source=blog)