Microsoft renamed and enhanced two Office 365 services during February 2014: Office Web Apps is now Office Online; and SkyDrive Pro is now OneDrive for Business.
Microsoft also released security and compliance related updates with improvements to authentication for Office 365 and Yammer, anti-spam and anti-malware enhancements, new email encryption options with S/MIME and Office 365 Message encryption, and new Data Loss Prevention features. Power BI for Office 365 is available for data visualization use.
Office 365 will continue monthly releases of new features and improvements to the service. For the most recent updates on what is new with Office 365 please follow the Office 365 updates at http://blogs.office.com/office365updates/