Today's release targets PCs and tablets specifically, but a Windows 10 Mobile version is "coming soon".
The new app promises improved performance, and also takes advantage of Microsoft's Windows Hello password-free biometric authentication, allowing you to use "either your face, fingerprint, or iris instead of your password to unlock your Dropbox". Other key features include:
•Quick Access to Recent Files: Using Jump List, all you have to do is right-click on the Dropbox app icon in your taskbar.
•Interactive Device Notifications: Accept a shared folder invitation without opening the app with Notifications.
Quick Search: You don’t need to click on the search icon; just type what you want to search.
•Drag and Drop: To move or copy a file into Dropbox, just drag and drop it from Windows File Explorer. Within the app, you can also move or copy files into other folders by dragging and dropping them between folders (hold Ctrl to copy).
•Commenting: Add comments directly on your files, and bring others into the discussion with @mentions.
The new Dropbox app for Windows 10 is free to download, and Microsoft says it will be available from the Windows Store "in the coming days" (although it's available for some users already).