Update Microsoft Teams API overview with new features

Removed outdated information about Microsoft Teams APIs supporting pagination and added details about organizing chats, channels, and meetings into custom sections.

Author: Danipocket

concepts/whats-new-overview.md

@@ -108,10 +108,7 @@ Use the **sensorTypes** property on [sensorCandidate](/graph/api/resources/secur
   - [Get all retained targeted messages](/graph/api/userteamwork-getallretainedtargetedmessages?view=graph-rest-beta&preserve-view=true) for a user, including messages deleted by the sender but preserved due to organizational retention policies.
   - [Delete a targeted message from a channel](/graph/api/userteamwork-deletetargetedmessage?view=graph-rest-beta&preserve-view=true) by providing the team ID, channel ID, and message ID.
   - [Delete a targeted message from a chat](/graph/api/chat-delete-targetedmessages?view=graph-rest-beta&preserve-view=true) by providing the chat ID and message ID.
-- The following Microsoft Teams APIs support **@odata.nextLink** pagination to handle increased channel limits. When the result set spans multiple pages, the response includes the **@odata.nextLink** property with a URL for retrieving the next page of results:
-  - [List channels](/graph/api/channel-list?view=graph-rest-beta&preserve-view=true)
-  - [List incomingChannels](/graph/api/team-list-incomingchannels?view=graph-rest-beta&preserve-view=true)
-  - [List allChannels](/graph/api/team-list-allchannels?view=graph-rest-beta&preserve-view=true)
+- Organize chats, channels, and meetings into custom sections in a user's Microsoft Teams chat list using the new [teamworkSection](/graph/api/resources/teamworksection?view=graph-rest-beta&preserve-view=true) and [teamworkSectionItem](/graph/api/resources/teamworksectionitem?view=graph-rest-beta&preserve-view=true) resources. Use the section management APIs to [list](/graph/api/userteamwork-list-sections?view=graph-rest-beta&preserve-view=true), [create](/graph/api/userteamwork-post-sections?view=graph-rest-beta&preserve-view=true), [get](/graph/api/teamworksection-get?view=graph-rest-beta&preserve-view=true), [update](/graph/api/teamworksection-update?view=graph-rest-beta&preserve-view=true), and [delete](/graph/api/teamworksection-delete?view=graph-rest-beta&preserve-view=true) sections, and [add](/graph/api/teamworksection-post-items?view=graph-rest-beta&preserve-view=true), [remove](/graph/api/teamworksectionitem-delete?view=graph-rest-beta&preserve-view=true), and [move](/graph/api/teamworksectionitem-move?view=graph-rest-beta&preserve-view=true) items within sections.
 
 ## March 2026: New and generally available