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# What's new/What's changed

This section presents an overview of the important changes between each release of the FBX SDK.

Details about all changes since the previous version of the FBX SDK are in the readme.txt file located in the FBX SDK installation root directory.

Avoiding Deprecated Classes and Functions

The deprecated classes and functions in each release of the FBX SDK are declared as K_DEPRECATED:

    K_DEPRECATED KFbxTakeNode* GetDefaultTakeNode();

You may continue to use deprecated functions, but note that:

- Your compiler will throw warnings.
- Deprecated functions in the current release will be completely removed in the next release.

#### Topics in this section

- FBX SDK 2013
- FBX SDK 2012
- FBX SDK 2011