Changes to monthly Public Updates schedule for MSI-based updates

Starting April, 2016, MSI-based non-security updates will be released on the first Tuesday of each month and MSI-based security updates will be released (as usual) on the second Tuesday of each month.

For more details, please see the following blog post:

https://blogs.technet.microsoft.com/office_sustained_engineering/2016/03/28/upcoming-change-to-the-release-schedule-for-non-security-updates/