Clarify which version of PowerShell Core supports which platform. (#2677)

* Clarify which version of PowerShell Core supports which platform.

Also, add details about EOL policy and when platforms where EOL'ed

* Address PR feedback

* update 6.0 raspbian to experimental
Center align some columns

* address Joey's feedback

Author: TravisEz13

reference/docs-conceptual/PowerShell-Core-Support.md

@@ -33,25 +33,48 @@ Eventually, we expect PowerShell Core will adopt the "long-term servicing" appro
 
 ## Supported platforms
 
-PowerShell Core is officially supported on the following platforms:
-
-* Windows 7, 8.1, and 10
-* Windows Server 2008 R2, 2012 R2, 2016
-* [Windows Server Semi-Annual Channel][semi-annual]
-* Ubuntu 14.04, 16.04, and 17.04
-* Debian 8.7+, and 9
-* CentOS 7
-* Red Hat Enterprise Linux 7
-* OpenSUSE 42.2
-* Fedora 27, 28
-* macOS 10.12+
-
-Our community has also contributed packages for the following platforms,
-but they are not officially suppported:
-
-* Arch Linux
-* Kali Linux
-* AppImage (works on multiple Linux platforms)
+Please see the following table to see what platform the version of PowerShell Core you are using is officially supported.
+
+Our community has also contributed packages for some platforms,
+but they are not officially supported.
+These packages are marked as `Community` in the table.
+
+Platforms listed as `Experimental` are not officially supported, but are available for experimentation and feedback.
+
+|                                                   | 6.0         | 6.1         |
+|---------------------------------------------------|:-----------:|:-----------:|
+| Windows 7, 8.1, and 10                            | Supported   | Supported   |
+| Windows Server 2008 R2, 2012 R2, 2016             | Supported   | Supported   |
+| [Windows Server Semi-Annual Channel][semi-annual] | Supported   | Supported   |
+| Ubuntu 14.04 and, 16.04                           | Supported   | Supported   |
+| Ubuntu 17.10, and 18.04                           |             | Supported   |
+| Debian 8.7+, and 9                                | Supported   | Supported   |
+| CentOS 7                                          | Supported   | Supported   |
+| Red Hat Enterprise Linux 7                        | Supported   | Supported   |
+| OpenSUSE 42.2                                     | Supported   | Supported   |
+| Fedora 27                                         | Supported   | Supported   |
+| Fedora 28                                         |             | Supported   |
+| macOS 10.12+                                      | Supported   | Supported   |
+| Arch                                              | Community   | Community   |
+| Raspbian                                          | Experimental| Community   |
+| Kali                                              | Community   | Community   |
+| AppImage  (works on multiple Linux platforms)     | Community   | Community   |
+
+## Platform which are out of support
+
+When a platform version reaches end-of-life as defined by the platform owner, PowerShell Core will also cease to provide support for that platform version. Previously released packages will remain available for customers needing access but formal support and updates of any kind will no longer be provided.
+
+Therefore, support for the following versions was ended by the distribution owners and are not supported.
+
+| OS       | Version | End of Life                                                                                 |
+|----------|---------|---------------------------------------------------------------------------------------------|
+| Fedora   | 26      | [May 2018](https://fedoramagazine.org/fedora-26-end-life/)                                  |
+| Fedora   | 25      | [December 2017](https://fedoramagazine.org/fedora-25-end-life/)                             |
+| Fedora   | 24      | [August 2017](https://fedoramagazine.org/fedora-24-eol/)                                    |
+| openSUSE | 42.2    | [January 2018](https://lists.opensuse.org/opensuse-security-announce/2017-11/msg00066.html) |
+| openSUSE | 42.1    | [May 2017](https://lists.opensuse.org/opensuse-security-announce/2017-05/msg00053.html)     |
+| Ubuntu   | 17.04   | [January 2018](https://lists.ubuntu.com/archives/ubuntu-announce/2018-January.txt)          |
+| Ubuntu   | 16.10   | [July 2017](https://lists.ubuntu.com/archives/ubuntu-announce/2017-July/000223.html)        |
 
 ## Notes on licensing