With Messages integration, Dropbox users can select Dropbox files from within the Messages app and share them with friends and colleagues, alleviating the need to open the Dropbox app and copy a link. A new Dropbox widget can be added to the lock screen, providing easier access to tools for creating, viewing, and uploading files.
There's a new tool in the Dropbox for signing PDFs, and there are options for getting notified when a file has been updated by a colleague so it can be refreshed with a tap.
Dropbox now includes support for picture-in-picture, a feature designed to let iPad users watch videos while performing other tasks. Split-screen support for compatible iPads is also coming in the near future, but won't be included in today's update.