Picturepan2 over at LiveSino has some shown off some nice screenshots of the Mail, People, and Calendar apps as they will look in the final version of Windows 8.1
Mail: In the mail app it will be easier to multi-select & triage, support for drag and drop has been added, and snap mode for attachments is now supported. The application will now be known as the “Windows 8 Outlook.com client.” There are also sweep/cleanup features similar to Outlook.com as well as auto-categorizing your email such as newsletters and social mail.
Calendar: What’s Next feature will show the next series of events on the calendar.
People: People app will get a significant UI makeover. Clicking on a contact’s first letter will change the look of the filter. A search box inside the updated People app and the contact page for each profile will also get a new look.