Microsoft originally planned to end support for Microsoft Exchange 2010 on January 14th 2020. After analyzing the deployment state of existing Exchange customers, Microsoft has decided to move the end of support date for Exchange Server 2010 to October 13th, 2020. Microsoft recommends making a concerted push to finish their migrations as soon as possible. For organizations who do not have the time or resources to migrate to Exchange Online or Office 365, Microsoft offers a free Microsoft FastTrack service that offers guidance on migrating away from older versions of Exchange.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-exchange-server-2010-support-gets-a-life-extension/