Add 4.19.0 release article (#7349)

- Add 4.19.0 release article
- Tweak 4.18.0 release article by removing "Test Fleet upgrades" feature

articles/fleet-4.18.0.md

@@ -1,12 +1,11 @@
-# Fleet 4.18.0 | Test Fleet upgrades before installing, better security and user messaging in Fleet Desktop
+# Fleet 4.18.0 | Better security and user messaging in Fleet Desktop
 
 Fleet 4.18.0 is up and running. Check out the full [changelog](https://github.com/fleetdm/fleet/releases/tag/fleet-v4.18.0) or continue reading to get the highlights.
 
 For update instructions, see our [upgrade guide](https://fleetdm.com/docs/deploying/upgrading-fleet) in the Fleet docs.
 
 ## Highlights
-- Automated testing for upgrading to a new version of Fleet.
-- Improved security for Fleet Desktop.git a 
+- Enjoy improved security for Fleet Desktop.
 - Show your end users a call to action in Fleet desktop for failing policies.
 
 ## Automated testing for upgrading to a new version of Fleet
@@ -15,7 +14,7 @@ For update instructions, see our [upgrade guide](https://fleetdm.com/docs/deploy
 Automated testing allows you to quickly and easily make sure that you can upgrade without unforseen consequences. Run the test with `FLEET_VERSION_A=v4.16.0 FLEET_VERSION_B=v4.17.0 go test ./test/upgrade` and see what happens when a Fleet server with version `A` is upgraded to version `B`! For more details, check out the [ticket](https://github.com/fleetdm/fleet/pull/6376). 
 
 ## Improved security for Fleet Desktop
-**Available in Fleet Premium**
+**Available in Fleet Free and Fleet Premium**
 
 Fleet Desktop uses a random UUID to authenticate to the Fleet server. While it's extremely unlikely to fall victim to a brute-force attack, it's always better to be safe than sorry. In order to combat that possibility, we've added rate limiting for all device authorized endpoints. 
 

articles/fleet-4.19.0.md

@@ -0,0 +1,83 @@
+# Fleet 4.19.0 | Just-in-time (JIT) user provisioning, remaining disk space, aggregate Windows and mobile device management (MDM) data
+
+Fleet 4.19.0 is up and running. Check out the full [changelog](https://github.com/fleetdm/fleet/releases/tag/fleet-v4.19.0) or continue reading to get the highlights.
+
+For update instructions, see our [upgrade guide](https://fleetdm.com/docs/deploying/upgrading-fleet) in the Fleet docs.
+
+## Highlights
+- Access just-in-time (JIT) user provisioning.
+- See remaining disk space for all hosts.
+- Aggregate Windows and mobile device management (MDM) data.
+
+## Just-in-time (JIT) user creation
+**Available in Fleet Premium**
+
+Just-in-time user provisioning makes it easier to spread the power of Fleet and osquery throughout your organization. 
+
+Fleet will now automatically create a user account when a new user attempts to log in to Fleet via single sign-on (SSO). New user accounts are given the Observer role. For more information on roles and their permissions in Fleet, [check out the documentation on fleetdm.com/docs](https://fleetdm.com/docs/using-fleet/permissions).
+
+## See remaining disk space for all hosts
+**Available in Fleet Free and Fleet Premium**
+
+![See remaining disk space for all hosts](../website/assets/images/articles/fleet-4.19.0-1.gif)
+
+Fleet 4.19.0 adds the ability to quickly see which hosts may not have enough remaining disk space to install operating system updates.
+
+To see this in action, head to the **Home > macOS** page and hover over a row in the **Operating systems** table. Select **View all hosts** to navigate to a list of hosts with a specific operating system version installed. Finally, select the **Disk space available** column to sort hosts by least remaining disk space to most.
+
+## Aggregate Windows and mobile device management (MDM) data
+**Available in Fleet Free and Fleet Premium**
+
+![Aggregate Windows data](../website/assets/images/articles/fleet-4.19.0-3-1200x675@2x.jpg)
+
+Fleet 4.19.0 adds the ability to see a list of all Windows operating system (OS) versions installed across all your hosts. 
+
+Also, Windows operating system versions now include the display version like "21H" or "21H2." This allows you to quickly reference [endoflife.date/windows](https://endoflife.date/windows), so you can see which operating systems Microsoft no longer supports. 
+
+![Aggregate mobile device management (MDM) data](../website/assets/images/articles/fleet-4.19.0-2.gif) 
+
+Fleet 4.19.0 also adds the improved Windows operating system versions on the **Hosts** page and **Host details** page in the Fleet UI, as well as the `GET /hosts` and `GET /hosts/{id}` API routes.
+
+This release also lets you view a list of all MDM solutions to which your hosts are enrolled. Head to the **Home > macOS** page in Fleet to see how your migration from one MDM solution to another is going.
+
+## More new features, improvements, and bug fixes
+
+In 4.19.0, we also:
+
+* Improved performance for aggregating software inventory. Aggregate software inventory is displayed on the **Software page** in the Fleet UI.
+
+* Added the ability to see the vendor for Windows programs in software inventory. Vendor data is available in the [`GET /software` API route](https://fleetdm.com/docs/using-fleet/rest-api#software).
+
+* Added a message in `fleetctl` that notifies users to run `fleet prepare` instead of `fleetctl prepare` when running database migrations for Fleet.
+
+* Improved the Fleet UI by maintaining applied host filters when a user navigates back to the Hosts page from an
+individual host's **Host details** page.
+
+* Improved the Fleet UI by adding consistent styling for **Cancel** buttons.
+
+* Improved the **Queries**, **Schedule**, and **Policies** pages in the Fleet UI by page size to 20
+  items. 
+
+* Improved the Fleet UI by informing the user that Fleet only supports screen widths above 768px.
+
+* Added support for asynchronous saving of the hosts' scheduled query statistics. This is an
+experimental feature that should only be used if you're seeing performance issues. Documentation
+for this feature can be found [here on fleetdm.com](https://fleetdm.com/docs/deploying/configuration#osquery-enable-async-host-processing).
+
+* Fixed a bug in which the **Operating system** and **Munki versions** cards on the **Home > macOS**
+page would not stack vertically at smaller screen widths.
+
+* Fixed a bug in which multiple Fleet Desktop icons would appear on macOS computers.
+
+* Fixed a bug that prevented Windows (`.msi`) installers from being generated on Windows machines.
+
+### Ready to update?
+
+Visit our [Update guide](https://fleetdm.com/docs/deploying/upgrading-fleet) in the Fleet docs for instructions on updating to Fleet 4.19.0.
+
+<meta name="category" value="releases">
+<meta name="authorFullName" value="Noah Talerman">
+<meta name="authorGitHubUsername" value="noahtalerman">
+<meta name="publishedOn" value="2022-08-22">
+<meta name="articleTitle" value="Fleet 4.19.0 | Just-in-time (JIT) user provisioning, remaining disk space, aggregate Windows and mobile device management (MDM) data">
+<meta name="articleImageUrl" value="../website/assets/images/articles/fleet-4.19.0-cover-1600x900@2x.jpg">