Merge pull request #218613 from sloanster/patch-8

Update calling-sdk-features.md

Author: prmerger-automator[bot]

articles/communication-services/concepts/voice-video-calling/calling-sdk-features.md

@@ -110,15 +110,16 @@ The maximum call duration is 30 hours, participants that reach the maximum call
 
 The following table represents the set of supported browsers which are currently available. **We support the most recent three major versions of the browser (most recent three minor versions for Safari)**  unless otherwise indicated.
 
-| Platform     | Chrome | Safari | Edge (Chromium)  |
-| ------------ | ------ | ------ | --------------   |
-| Android      | ✔️      | ❌      | ❌           | 
-| iOS          | ❌      | ✔️      | ❌           |
-| macOS        | ✔️      | ✔️      | ✔️           | 
-| Windows      | ✔️      | ❌      | ✔️           |
-| Ubuntu/Linux | ✔️      | ❌      | ❌           |    
+| Platform     | Chrome | Safari | Edge (Chromium)  | Firefox |
+| ------------ | ------ | ------ | --------------   | ------- |
+| Android      | ✔️      | ❌      | ❌           | ❌      |
+| iOS          | ❌      | ✔️      | ❌           | ❌      |
+| macOS        | ✔️      | ✔️      | ✔️           | ✔️      |
+| Windows      | ✔️      | ❌      | ✔️           | ✔️      |
+| Ubuntu/Linux | ✔️      | ❌      | ❌           | ❌      | 
 
 * Outgoing Screen Sharing is not supported on iOS or Android.
+* Firefox support is in public preview.
 * [An iOS app on Safari can't enumerate/select mic and speaker devices](../known-issues.md#enumerating-devices-isnt-possible-in-safari-when-the-application-runs-on-ios-or-ipados) (for example, Bluetooth); this is a limitation of the OS, and there's always only one device, OS controls default device selection.
 
 ## Android Calling SDK support