Microsoft has rolled out a minor update to the Mail, Calendar, People, and Messaging apps for Windows 8 and Windows RT. This minor update simply addresses performance issues and bug fixes.
Microsoft has yet to offer an updated change log for the update, so if you head over to the app's "details" page at the Windows Store, you will see the change log from the last update. Hit the Windows Store to upgrade these apps or download them via the link below, and let us know what new features or improvements you notice.
Microsoft recently revealed that all the built-in apps in Windows 8, such as Photos, Mail, SkyDrive, Camera, Music, and Video apps, will be improved with the upcoming Windows 8.1 update. For example, the updated Photos app will have better editing features while the Music app will be completely redesigned. Microsoft plans on going in depth in the near future with details on all planned updates for these built-in apps.