Microsoft plans to end support for Windows 7 after January 14th 2020 and will no longer provide security updates. For volume license customers, Windows 7 Extended Security Updates (ESU) will be available for a fee through January 2023. A future option may be Windows Virtual Desktop (WVD) for Windows 7, which was announced in 2018 but not yet available in Preview mode.
Update: paid Windows 7 Extended Security Updates (ESU) will be available for businesses of all sizes through January 2023.
Office 2010 will no longer be supported as of October 13th 2020. Microsoft is also ending support for Windows 10 Mobile OS for smartphones on December 10th 2019 and recommends that customers move to a supported Android or iOS device.
Internet Explorer 11 will be the last release, and Microsoft has released more information at its Internet Explorer FAQ page.
Support life cycle dates for Microsoft products can be found at support.microsoft.com/en-us/lifecycle/search.