change to dict and add new values

index.bs

@@ -2806,15 +2806,15 @@ Note: Invoking this method from a [=browsing context=] where the [=Web Authentic
 
 <div link-for-hint="WebAuthentication/getClientCapabilities">
 
-[=[WRPS]=] use this method to determine the availability of a limited set of [=WebAuthn Client|client=] capabilities to offer certain workflows and experiences to users. For example, an RP may offer a sign in button on clients where only {{AuthenticatorTransport/hybrid}} transport is available (instead of showing a username field), or offer security key enrollment on [=WebAuthn Client|clients=] that support client PIN entry.
+[=[WRPS]=] use this method to determine the availability of a limited set of [=WebAuthn Client|client=] capabilities to offer certain workflows and experiences to users. 
 
 Upon invocation, the [=client=] employs a [=client platform=]-specific procedure to discover availablity of these capabilities.
 
-This method has no arguments and returns a set of strings.
+This method has no arguments and returns a promise to a map.
 
 <xmp class="idl">
     partial interface PublicKeyCredential {
-        static Promise<sequence<DOMString>> getClientCapabilities();
+        static Promise<ClientCapability> getClientCapabilities();
     };
 </xmp>
 
@@ -3987,21 +3987,31 @@ Note: The {{UserVerificationRequirement}} enumeration is deliberately not refere
         interest of minimizing disruption to the user interaction flow).
 </div>
 
-### Client Capability Enumeration (enum <dfn enum>ClientCapability</dfn>) ### {#enum-clientCapability}
+### Client Capability Set (dictionary <dfn dictionary>ClientCapability</dfn>) ### {#dictionary-client-capability}
 
 <xmp class="idl">
-    enum ClientCapability {
-        "hybrid-transport"
+    dictionary ClientCapability {
+        boolean userVerifyingPlatformAuthenticator;
+        boolean hybridTransport;
+        boolean passkeyPlatformAuthenticator;
+        boolean conditionalMediation;
     };
 </xmp>
 
-This enumeration defines a limited set of client capabilities which a [=[WRP]=] may evaluate to offer certain workflows and experiences to users.
+This dictionary defines a limited set of client capabilities which a [=[WRP]=] may evaluate to offer certain workflows and experiences to users.
 
-Note: The {{ClientCapability}} enumeration is deliberately not referenced, see [[#sct-domstring-backwards-compatibility]].
+<div dfn-type="dict-member" dfn-for="ClientCapability">
+    :   <dfn>userVerifyingPlatformAuthenticator</dfn>
+    ::  The [=WebAuthn Client=] supports usage of a [=user-verifying platform authenticator=].
 
-<div dfn-type="enum-value" dfn-for="ClientCapability">
-    :   <dfn>hybrid-transport</dfn>
-    ::  The [=WebAuthn Client=] supports the {{AuthenticatorTransport/hybrid}} transport.
+    :   <dfn>hybridTransport</dfn>
+    ::  The [=WebAuthn Client=] supports usage of the {{AuthenticatorTransport/hybrid}} transport.
+
+    :   <dfn>passkeyPlatformAuthenticator</dfn>
+    ::  The [=WebAuthn Client=] supports usage of a [=passkey platform authenticator=], locally and/or via {{AuthenticatorTransport/hybrid}} transport.
+
+    :   <dfn>conditionalMediation</dfn>
+    ::  The [=WebAuthn Client=] is capable of {{CredentialMediationRequirement/conditional}} mediation.
 
 </div>