This provided a solid and tested “Semi-annual” version in January and July each year. Business users could opt in to a six-monthly update channel. Instead of the old 3-year update cycle, 365 is a constantly evolving product with new features arriving as each new version is released.īecause business users don’t want constant change (and need rock-solid reliable releases) Microsoft introduced the concept of “update channels” for Office 365. Excel 365 is planned to have an infinite life.