Add mainstream release NOTE blocks (#9142)

Author: sdwheeler

reference/docs-conceptual/learn/experimental-features.md

@@ -1,6 +1,6 @@
 ---
 description: Lists the currently available experimental features and how to use them.
-ms.date: 08/12/2022
+ms.date: 08/18/2022
 title: Using Experimental Features in PowerShell
 ---
 # Using Experimental Features in PowerShell
@@ -35,14 +35,14 @@ Legend
 |                            Name                            |       7.0        |       7.1        |       7.2        |       7.3        |
 | ---------------------------------------------------------- | :--------------: | :--------------: | :--------------: | :--------------: |
 | PSNullConditionalOperators                                 | ✔️ |     ✅     |                  |                  |
-| PSUnixFileStat (non-Windows only)                          | ✔️ | ✔️ |     ✅     |                  |
+| PSUnixFileStat (non-Windows only)                          | ✔️ |     ✅     |                  |                  |
 | Microsoft.PowerShell.Utility.PSManageBreakpointsInRunspace | ✔️ | ✔️ |     ✅     |                  |
 | PSCultureInvariantReplaceOperator                          |                  | ✔️ |     ✅     |                  |
 | PSNotApplyErrorActionToStderr                              |                  | ✔️ |     ✅     |                  |
 | PSImplicitRemotingBatching                                 | ✔️ | ✔️ |     ❌     |                  |
 | PSCommandNotFoundSuggestion                                | ✔️ | ✔️ | ✔️ | ✔️ |
 | PSDesiredStateConfiguration.InvokeDscResource              | ✔️ | ✔️ | ✔️ | ✔️ |
-| PSNativePSPathResolution                                   |                  | ✔️ | ✔️ | ❌         |
+| PSNativePSPathResolution                                   |                  | ✔️ | ✔️ |     ❌     |
 | PSSubsystemPluginModel                                     |                  | ✔️ | ✔️ | ✔️ |
 | PSNativeCommandArgumentPassing                             |                  |                  | ✔️ | ✔️ |
 | PSAnsiRenderingFileInfo                                    |                  |                  | ✔️ | ✔️ |
@@ -162,6 +162,9 @@ gcs.
 
 ## PSCultureInvariantReplaceOperator
 
+> [!NOTE]
+> This feature became mainstream in PowerShell 7.2.
+
 When the left-hand operand in a `-replace` operator statement is not a string, that operand is
 converted to a string.
 
@@ -414,6 +417,9 @@ operating system.
 
 ## PSNotApplyErrorActionToStderr
 
+> [!NOTE]
+> This feature became mainstream in PowerShell 7.2.
+
 When this experimental feature is enabled, error records redirected from native commands, like when
 using redirection operators (`2>&1`), are not written to the `$Error` variable and the preference
 variable `$ErrorActionPreference` does not affect the redirected output.
@@ -427,6 +433,9 @@ When a native command has a non-zero exit code, `$?` is set to `$false`. If the
 
 ## PSNullConditionalOperators
 
+> [!NOTE]
+> This feature became mainstream in PowerShell 7.1.
+
 Introduces new operators for Null conditional member access operators - `?.` and `?[]`. Null member
 access operators can be used on scalar types and array types. Return the value of the accessed
 member if the variable is not null. If the value of the variable is null, then return null.