DMX-4117 service account sunset timeline (#211)

* adding draft announcement for service account sunset

* adding announcment post date

overview/announcements.md

@@ -5,6 +5,20 @@ layout: default
 section_title: Overview
 ---
 
+>**Sunset of Traditional Service Accounts** (01/29/2024)
+>
+>*All Traditional Service Accounts will sunset on December 31, 2024.*
+>
+Traditional Service Accounts were deprecated on December 9, 2021.
+>Beginning October 1, 2024, we will no longer allow the creation of new Traditional Service Accounts.
+>Existing Traditional Service Accounts will continue to function until December 31, 2024.
+>
+>In accordance with this timeline, developers of data connection applications that currently use Traditional Service Accounts are required to update their applications to use Developer Managed Service Accounts, and customers will be required to install these updated applications before the sunset date.
+>All data connection applications not migrated by the sunset date will cease to function.
+>Any application listed on the Procore App Marketplace that is not using a supported method for accessing the Procore API will be removed by the sunset date.
+>See [Deprecation of Traditional Service Accounts]({{ site.url }}{{ site.baseurl }}{% link overview/service_account_deprecation.md %}) and [Migrating Data Connection Applications to Use DMSAs](https://support.procore.com/products/online/user-guide/company-level/admin/tutorials/migrating-to-dmsa) for additional information.
+>If you have questions regarding this change, please reach out to [[email protected]](mailto:[email protected]).
+
 >**OAuth access token expiration time reduced to 5400 seconds** (09/26/2023)
 >
 >As part of the planned transition to shorter duration OAuth access tokens, token expiration time has been reduced from 7200 seconds (2 hours) to 5400 seconds (1.5 hours).