start CU1 draft

Author: haywoodsloan

support/sql/releases/download-and-install-latest-updates.md

@@ -37,7 +37,7 @@ Each of the following links provides information for all of the applicable produ
 
 |Version|Latest service pack|Latest GDR|Latest cumulative update|
 |---|---|---|---|
-|**SQL Server 2025**<br/><br/>- [Build information](#sql-server-2025)<br/>- [Installation](/sql/database-engine/install-windows/install-sql-server?view=sql-server-ver17&preserve-view=true)|None|None|None|
+|**SQL Server 2025**<br/><br/>- [Build information](#sql-server-2025)<br/>- [Installation](/sql/database-engine/install-windows/install-sql-server?view=sql-server-ver17&preserve-view=true)|None|None|[CU1 for 2025](sqlserver-2025/cumulativeupdate1.md) <br/>(17.0.4005.? TODO - January 2026)|
 |**SQL Server 2022**<br/><br/>- [Build information](#sql-server-2022)<br/>- [Installation](/sql/database-engine/install-windows/install-sql-server?view=sql-server-ver16&preserve-view=true)|None|[GDR](https://support.microsoft.com/help/5068407) <br/>(16.0.1160.1 - November 2025) |[CU22 for 2022](sqlserver-2022/cumulativeupdate22.md) <br/>(16.0.4225.2 - November 2025) <br/><br/>[CU21 + GDR](https://support.microsoft.com/help/5068406) <br/>(16.0.4222.2 - November 2025)|
 |**SQL Server 2019**<br/><br/>- [Build information](#sql-server-2019)<br/>- [Installation](/sql/database-engine/install-windows/install-sql-server?view=sql-server-ver15&preserve-view=true)|None|[GDR](https://support.microsoft.com/help/5068405) <br/>(15.0.2155.2 - November 2025)|[CU32 for 2019](sqlserver-2019/cumulativeupdate32.md) <br/>(15.0.4430.1 - February 2025)<br/><br/>[CU32 + GDR](https://support.microsoft.com/help/5068404) <br/>(15.0.4455.2 - November 2025)|
 |**SQL Server 2017**<br/><br/>- [Build information](#sql-server-2017)<br/>- [Installation](/sql/database-engine/install-windows/install-sql-server?view=sql-server-2017&preserve-view=true)|[Azure Connect pack](sqlserver-2017/azureconnect.md) <br/>(14.0.3490.10 - March 2025)|[GDR](https://support.microsoft.com/help/5068403) <br/>(14.0.2095.1 - November 2025)|[CU31 for 2017](sqlserver-2017/cumulativeupdate31.md) <br/>(14.0.3456.2 - September 2022)<br/><br/>[CU31 + GDR](https://support.microsoft.com/help/5068402) <br/>(14.0.3515.1 - November 2025)|
@@ -59,6 +59,7 @@ Each of the following links provides information for all of the applicable produ
 
 | Build number or version | Service pack | Update    | Knowledge Base number                                 | Release date       |
 |-------------------------|--------------|-----------|-------------------------------------------------------|--------------------|
+| 17.0.4005.? TODO        | None         | CU1       | [KB5074901](sqlserver-2025/cumulativeupdate1 .md)     | January 15, 2026   |
 | 17.0.1000.7             | None         | RTM/GA    | NA                                                    | November 18, 2025  |
 
 

support/sql/releases/sqlserver-2025/build-versions.md

@@ -0,0 +1 @@
+<!-- TODO: Placeholder, real doc will be merged from GDR release -->