Microsoft have announced that three products released in 2016 will receive Extended Security Updates for up to three years.
The first two are Windows 10 Enterprise LTSB 2016 and Windows 10 IoT Enterprise LTSB 2016, which have an End of Support date of 13 October 2026, and, finally, Windows Server 2016, with an End of Support date of 12 January 2027. The Windows 10 Enterprise LTSB 2016 Extended Security Updates will be available via Volume Licensing and CSP, while the Windows 10 IoT Enterprise LTSB 2016 Extended Security Updates will be offered only through IoT OEMs.
Pricing and availability details for Windows Server 2016 are forthcoming, but all the current information including some pricing can be found in the Windows IT Pro Blog: https://bit.ly/4spqXhm.