Windows 10 will feature DAILY security patches anytime during the month, rather than the traditional Patch Tuesday update process.

http://www.theregister.co.uk/2015/05/04/microsoft_windows_10_updates/

Ignite 2015 Microsoft has shown off some of the new security mechanisms embedded in Windows 10, and revealed a change to its software updates. Windows supremo Terry Myerson reckons the revised security patch rollout – effectively ditching the monthly Patch Tuesday.  Myerson promised that with the new version of Windows, Microsoft will release security updates to PCs, tablets and phones 24/7, as well as pushing other software “innovations,” effectively putting an end to the need for a Patch Tuesday once a month.

Windows 10 enterprise customers will stay on the monthly update cycle, which will be reworked as Windows Update for Business: this will allow IT managers to pick and choose updates to deploy, and set when they will be automatically installed.  He also said that the patching system had been updated to allow much tighter control over branch offices and remote users, who may not have decent bandwidth. Patches can be distributed peer-to-peer, and the timing of the installations can be set to ensure update downloads do not interfere with day-to-day operations.