Microsoft says it will now roll out twice yearly updates for Windows and Office in March and September, starting with “Redstone 3”
Mary Jo Foley / ZDNet :
Context & Ripple Effects
Microsoft's Redstone updates had been slipping against their own targets — the company pushed Redstone 2 back to Spring 2017 to line up with a new device wave, after first sketching the branch as a 2016 Windows 10 update. Committing publicly to March and September slots starting with Redstone 3 converts that ad-hoc scheduling into a published servicing calendar.
The move matters because it makes update timing a contract with enterprise IT rather than an announcement-by-blog-post, and it prefigures how Microsoft later standardized the same twice-yearly rhythm across its business applications before recalibrating again in 2022.
First-order effects
- Enterprise IT teams get fixed March and September windows for planning validation and deployment of Windows and Office feature updates, replacing the slip-prone Redstone schedule that pushed Redstone 2 out by months.
- Microsoft's own device and partner planning now anchors to two known ship dates a year, formalizing the device-wave alignment it pursued ad hoc with Redstone 2.
Second-order effects
- The cadence template spreads across Microsoft's portfolio: the company soon applied the same two-updates-a-year model to Dynamics 365, giving IT pros a sandbox environment to validate each release before rollout.
- Third-party software vendors and management toolmakers building around Windows gain a predictable test-and-certify cycle, shifting compatibility work from reactive patching to scheduled release windows.
Third-order effects
- A published cadence turns Windows from episodic big-bang releases into a continuously serviced platform — but the dial keeps moving: by 2022 Microsoft reportedly moved major Windows versions to a three-year cycle while shipping new features to the current version up to four times a year, decoupling feature delivery from version numbering.
- If the servicing model holds, competitive pressure shifts toward update reliability and manageability tooling, making an OS vendor's cadence discipline itself a selling point to enterprise buyers.
The trend: Microsoft is converting Windows and Office from milestone-driven releases into a serviced platform on a published, tunable update cadence that it extends across its product lines and revises as deployment realities demand.