The content on Microsoft's MSDN and TechNet blog platforms will soon become read-only. Look for future blog posts about Microsoft's security configuration baselines and the Security Compliance Toolkit on the new Microsoft Security Baselines Blog, along with a new Microsoft Security Baselines discussion space. We have also migrated our most important posts on this site to the new site.
Do stay tuned! We will be posting an update to the Office 365 ProPlus security baseline soon.