We’ve added some new features to the Tumblr API:

• Edit and delete posts
• Authenticated reading to include private posts
• Convenient login behavior for embedded Dashboard browsers
• AIFF audio format support
• The optional filter parameter to /api/read
• A new /api/authenticate action with expanded information

Check the documentation for details.

Special thanks to Jeff Rock and Daniel Jalkut for patiently helping us test these features during development.