SharePoint Server 2016 and the next cumulative update is available. We may call it public update in the future, in short PU.
Language independent version
KB 3115299 Language independent version
https://support.microsoft.com/en-us/KB/3115299
Download it from: https://www.microsoft.com/en-us/download/details.aspx?id=53287
KB 3115304 Language dependent fixes
https://support.microsoft.com/en-us/kb/3115304
Download it from: https://www.microsoft.com/en-us/download/details.aspx?id=53268
KB 3115386 Update for Office Online Server 2016; known as Office Web Application Server 2013, OWAS and let us call it now OOS2016
https://support.microsoft.com/en-us/kb/3115386
Download it from: https://www.microsoft.com/en-us/download/details.aspx?id=53302
You may download both packages, the language what you see on the download page is not important.
After installing the fixes you need to run the SharePoint 2016 Products Configuration Wizard on each machine in the farm. If you prefer to run the command line version psconfig.exe ensure to have a look here for the correct options.
SharePoint 2016 April 2016 CU Build Number: 16.0.4405.1000
The language independent Fix updates the configuration database schema – so the configuration database schema version will show the version number above.
You can use the SharePoint Server 2016 Patch Build Numbers Powershell Module to identify the patch level of your SharePoint components.
Related Links:
- Blog: Common Question: What is the difference between a PU, a CU and a COD?
- Blog: SharePoint Patching demystified
- Blog: Why I prefer PSCONFIGUI.EXE over PSCONFIG.EXE
- Blog: April 2016 Office Update Release
- Technet: Update Center for Microsoft Office, Office Servers, and Related Products
- Blog: SharePoint Server 2016 Patch Build Numbers Powershell Module