Microsoft has announced that it will no longer support Office 2007/Exchange 2007 after October 2017.
In addition, Microsoft will no longer offer custom support of Office products to customers with Premier support contracts.
After those end of support dates, we [Microsoft] will no longer offer custom support on any version of Office products (Exchange Server; Office Suites; SharePoint Server; Office Communications Server; Lync Server; Skype for Business Server; Project Server and Visio).
Extended, free support for Microsoft Exchange 2007 with Service Pack 3 is set to end in April 2017. Support for Office 2007 with Service Pack 3 is slated to end next October.
“End of support” means there will be no more fixes or patches — paid or free, security or non-security — coming for specific products.
Contact your Microsoft sales manager for more information.