Referencing the different the relevant mautic versions

pages/25.What's New/mautic-2/docs.en.md

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+---
+title: 'Mautic 2'
+taxonomy:
+    category:
+        - docs
+twitterenable: true
+twittercardoptions: summary
+articleenabled: false
+orgaenabled: false
+orga:
+    ratingValue: 2.5
+orgaratingenabled: false
+personenabled: false
+facebookenable: true
+---
+
+----------------------------
+## Version 2.0
+
+Mautic 2.0 brought a significant number of enhancements to Mautic.  The full release notes are at https://github.com/mautic/mautic/releases/tag/2.0.0.
+
+### Hosting Requirements
+
+- The PHP minimum version is now 5.6.19 (PHP 7 is supported!)
+- The MySQL minimum version is now 5.5.3
+- PostgreSQL support has been dropped
+
+### Cron Jobs Update
+See [Cron Jobs](./../setup/cron_jobs.html)
+
+### Froala editor
+
+This release switches CKEditor in favor of Froala editor which has a more polished look and functionality.
+
+### New email and page builders!
+
+Email and page builders have been overhauled to be cleaner and better. This means that custom themes have changed as well.
+[Watch this video for more.](https://mautic.wistia.com/medias/vtdlpc365u)
+
+### Dynamic web content
+
+You can now push contact aware content to your web pages through Mautic campaigns.  See [Dynamic Web Content](./../dwc/index.html)
+
+### Bi-directional Salesforce Integration
+
+This much anticipated feature is now in Mautic!  For an overview [watch this video](https://mautic.wistia.com/medias/4631xkjcw8).
+
+### Lifecycle stages
+
+You can now track your contacts through various stages and lifecycles.
+[Watch this video for more.](https://mautic.wistia.com/medias/ourd9qpfhy)
+
+### Updated Dashboard
+
+Drag and Drop with new widgets for end-to-end attribution and more.
+[Watch this video for an overview.](https://mautic.wistia.com/medias/qzoqsqko12)
+
+### UTM Tags
+
+A simple code you can attach to a custom URL to track content and more.  The UTM tags that are currently supported are:
+- utm_campaign
+- utm_content
+- utm_medium
+- utm_source
+- utm_term
+
+For more information on this [watch this video.](https://mautic.wistia.com/medias/vmqohgece0)

pages/25.What's New/mautic-3/docs.en.md

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+---
+title: 'Mautic 3'
+taxonomy:
+    category:
+        - docs
+twitterenable: true
+twittercardoptions: summary
+articleenabled: false
+orgaenabled: false
+orga:
+    ratingValue: 2.5
+orgaratingenabled: false
+personenabled: false
+facebookenable: true
+---
+
+----------------------------
+
+## Version 3.0
+
+Mautic 3.0 introduces significant changes to the underlying application along with some changes to the minimum version requirements to run Mautic. They are outlined as follows:
+
+### Hosting Requirements
+
+- The minimum PHP version is raised from 5.6.19 to 7.2.0.
+- The minimum MySQL version is increased from version 5.5.3 to 5.7.14.
+
+### Cron Jobs Update
+
+There are significant changes in the file structure in Mautic 3. To comply with the change, you will need to update your cron jobs path.
+
+Example:
+
+`app/console mautic:segments:update`
+
+should now be:
+
+`bin/console mautic:segments:update`
+
+> Note: For Mautic version 2.0, you must continue using the `app/console` path for running any cron job.
+
+### Removed Plugins
+
+Mautic 3.0 removed support for the Rackspace and OpenStack plugins for remote assets.
+
+If you currently use Rackspace or OpenStack, you will need to switch to Amazon S3, or create custom plugins to support alternative providers.
+
+### New File Manager for WYSIWYG Editors
+
+When you try to upload an image or replace an existing image using the email or page builder, you will see a new file manager which you can use to drag and drop images.
+
+![The new file manager window](file-manager.png)

pages/25.What's New/mautic-4/docs.en.md

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+---
+title: 'Mautic 4'
+taxonomy:
+    category:
+        - docs
+twitterenable: true
+twittercardoptions: summary
+articleenabled: false
+orgaenabled: false
+orga:
+    ratingValue: 2.5
+orgaratingenabled: false
+personenabled: false
+facebookenable: true
+---
+----------------------------
+
+## Version 4.0
+
+Mautic 4.0 brings several long-awaited features in Mautic. They are outlined as follows:
+
+### Hosting Requirements
+
+- The minimum PHP version is raised from 7.4.
+- The minimum MySQL version is increased from version 5.5.3 to 5.7.14.
+
+## Update to Mautic 4
+
+Before you consider updating to Mautic 4, you must be running at least the latest stable version of Mautic 3. Updating from Mautic 2 to Mautic 4 is not, and will not, be supported. Once you have tested your backup, you can proceed with the update.
+
+## New email and landing page builder
+
+The new email and landing page builder is enabled by default - you can disable it under Plugins if you prefer to continue using the legacy builder, until Mautic 5 when the legacy builder will be removed. Ensure you reload the page if you disable the new builder.
+
+## Updated themes
+
+All themes you wish to use in the new builder will need a simple, one line change to be made in their configuration file. Read the documentation here.
+
+## OAuth2 support
+
+Support for OAuth1 has been removed. OAuth2 instead is now supported and should be used.
+
+