Major upgrade: 1. New submenu for great user experience; 2. Bookmark. User can add bookmark of different color to a document. 3. Improvement of File management actions and upload/download. Now user can upload to a selected folder of cloud storage 4. Landscape mode support. Documents can be viewed/annotated in landscape mode 5. Support of MS Word document with math equations 6. Latest version of Box.net SDK 7. Bug fixes. 8. In-app-purchase: Sticky note and link support.