docs(): added whats new in v3 guide

docs/mkdocs.yml

 site_name: Grafana Documentation
-site_url: http://docs.grafana.org/
+site_url: /
 site_description: Documentation for Grafana, The Graphite and Influxdb dashboard and graph composer
 site_favicon: img/fav32.png
 
@@ -45,6 +45,7 @@ pages:
 
 - ['guides/basic_concepts.md', 'User Guides', 'Basic Concepts']
 - ['guides/gettingstarted.md', 'User Guides', 'Getting Started']
+- ['guides/whats-new-in-v3.md', 'User Guides', "What's New in Grafana v3.0"]
 - ['guides/whats-new-in-v2-6.md', 'User Guides', "What's New in Grafana v2.6"]
 - ['guides/whats-new-in-v2-5.md', 'User Guides', "What's New in Grafana v2.5"]
 - ['guides/whats-new-in-v2-1.md', 'User Guides', "What's New in Grafana v2.1"]

docs/sources/guides/whats-new-in-v3.md

+---
+page_title: What's New in Grafana v3.0
+page_description: What's new in Grafana v3.0
+page_keywords: grafana, new, changes, features, documentation
+---
+
+# What's New in Grafana v3.0
+
+## Commercial Support
+
+Commercial Support subscriptions for Grafana are now [generally available](https://grafana.net/support/plans/).
+
+Raintank is committed to a 100% open-source strategy for Grafana. We
+do not want to go down the “open core” route. If your organization
+finds Grafana valuable, please consider purchasing a subscription. Get
+direct support, bug fixes, and training from the core Grafana team.
+
+## Plugins
+
+With the popularity of Grafana continuing to accelerate, it has been
+challenging to keep up with all the requests for new features, new
+panels, new data sources, and new functionality. Saying “no” so often
+has been frustrating, especially for an open source project with such
+a vibrant community.
+
+The team felt that it was time to dramatically improve extensibility
+through plugin support. Grafana 3.0 comes with a completely revamped
+plugin SDK / API.
+
+We’ve refactored our **Data Source** plugin architecture and added
+two new plugin types:
+
+* **Panel** plugins let you add new panel types for your Dashboards.
+* **App** plugins bundle **Panels** plugins, **Data Sources** plugins,
+Dashboards, and Grafana **Pages**. Apps are a great way to provide an
+entire experience right within Grafana.
+
+## Grafana.net
+
+<img src="/img/v3/grafana_net_tour.png">
+
+A preview of [Grafana.net](http://grafana.net) is launching along with this release. We
+think it’s the perfect compliment to Grafana.
+
+Grafana.net currently offers a central repository where the community
+can come together to discover and share plugins (Data Sources, Panels,
+Apps) and Dashboards for Grafana 3.0 and above.
+
+We are also working on a hosted Graphite-compatible Data Source that
+will be optimized for use with Grafana. It’ll be easy to combine your
+existing Data Source(s) with this OpenSaaS option.
+
+Finally, Grafana.net will also be a hub to manage all your Grafana
+instances. You’ll be able to monitor their health and availability,
+perform Dashboard backups, and more.
+
+Grafana.net will officially launch along with the stable version of
+Grafana 3.0, but <a href=http://www.grafana.net>check out the preview
+and sign up for an account</a> in the meantime.
+
+
+## grafana-cli
+
+Grafana 3.0 comes with a new command line tool called grafana-cli. You
+can easily install plugins from Grafana.net with it. For
+example:
+
+
+```
+grafana-cli install grafana-pie-chart-panel
+```
+
+## Personalization & Preferences
+
+The home dashboard, timezone and theme can now be customized on Organization
+and user Profile level. Grafana can also track recently viewed dashboards, which
+can then be displayed in the dashboard list panel.
+
+## Improved Playlists
+
+You can now save Playlists, and start them by using a Playlist URL. If
+you update a running Playlist, it will update after its next cycle.
+
+This is powerful as it allows you to remote control Grafana. If you
+have a big TV display showing Grafana in your company lobby, create a
+playlist named Lobby, and start it on the computer connected to the
+Lobby TV.
+
+You can now change the Lobby playlist and have the dashboards shown in
+the Lobby update accordingly, automatically.
+
+The playlist does not even have to contain multiple Dashboards; you
+can use this feature to reload the whole Dashboard (and Grafana)
+periodically and remotely.
+
+You can also make Playlists dynamic by using Dashboard **tags** to
+define the Playlist.
+
+<img src="/img/v3/playlist.png">
+
+## Improved UI
+
+We’ve always tried to focus on a good looking, usable, and responsive
+UI. We’ve continued to pay a lot of attention to these areas in this
+release.
+
+Grafana 3.0 has a dramatically updated UI that not only looks better
+but also has a number of usability improvements. The side menu now
+works as a dropdown that you can pin to the side. The Organization /
+Profile / Sign out side menu links have been combined into an on hover
+slide out menu.
+
+In addition, all the forms and the layouts of all pages have been
+updated to look and flow better, and be much more consistent. There
+are literally hundreds of UI improvements and refinements.
+
+Here’s the new side menu in action:
+
+<img src="/img/v3/menu.gif">
+
+And here's the new look for Dashboard settings:
+
+<img src="/img/v3/dashboard_settings.png">
+
+Check out the <a href="http://play.grafana.org" target="_blank">Play
+Site</a> to get a feel for some of the UI changes.
+
+## Improved Annotations
+
+It is now possible to define a link in each annotation. You can hover
+over the link and click the annotation text. This feature is very
+useful for linking to particular commits or tickets where more
+detailed information can be presented to the user.
+
+<img src="/img/v3/annotation_links.gif">
+
+## Data source variables
+
+This has been a top requested feature for very long we are exited to finally provide
+this feature. You can now add a new `Data source` type variable. That will
+automatically be filled with instance names of your data sources.
+
+<img src="/img/v3/data_source_variable.png">
+
+You can then use this variable as the panel data source:
+
+<img src="/img/v3/data_source_variable_use.png">
+
+This will allow you to quickly change data source server and reuse the
+same dashboard for different instances of your metrics backend. For example
+you might have Graphite running in multiple data centers or environments.
+
+## Prometheus, InfluxDB, and OpenTSDB improvements
+
+All three of these popular included Data Sources have seen a variety
+of improvements in this release. Here are some highlights:
+
+### Prometheus
+
+The Prometheus Data Source now supports annotations.
+
+### InfluxDB
+
+You can now select the InfluxDB policy from the query editor.
+<img src="/img/v3/influxdb_policy.png">
+
+Grafana 3.0 also comes with support for InfluxDB 0.11 and InfluxDB 0.12.
+
+### OpenTSDB
+
+OpenTSDB 2.2 is better supported and now supports millisecond precision.
+
+## Breaking changes
+
+Dashboards from v2.6 are compatible; no manual updates should be necessary. There could
+be some edge case scenarios where dashboards using templating could stop working.
+If that is the case just enter the edit view for the template variable and hit Update button.
+This is due to a simplification of the variable format system where template variables are
+now stored without any formatting (glob/regex/etc), this is done on the fly when the
+variable is interpolated.
+
+* Plugin API: The plugin API has changed so if you are using a custom
+data source (or panel) they need to be updated as well.
+
+* InfluxDB 0.8: This data source is no longer included in releases,
+you can still install manually from [Grafana.net](http://grafana.net)
+
+* KairosDB: This data source has also no longer shipped with Grafana,
+you can install it manually from [Grafana.net](http://grafana.net)
+
+## CHANGELOG
+
+For a detailed list and link to github issues for everything included
+in the 3.0 release please view the
+[CHANGELOG.md](https://github.com/grafana/grafana/blob/master/CHANGELOG.md)
+file.