Microsoft has announced they will be extending mainstream and extended support dated for Windows Server 2012. Microsoft Lifecycle support has two five-year phases of windows products.
The Lifecycle Policy for Windows Server 2012 states that Mainstream Support will be provided for five years, or for two years after the successor product (N+1, where N=product version) is released, whichever is longer. Microsoft will also provide Extended Support for the five years following Mainstream Support or for two years after the second successor product (N+2) is released, whichever is longer. So the new end of support date for windows server will be
So the new end of support date for windows server will be October- 10, 2023 according to new updates from Microsoft the original date had been Jan- 10, 2023. It has been an extension of nine more months to the existing support for windows server 2012.
Mainstream support ends: Oct 9, 2018
Extended support ends: Oct 10, 2023