This update can be downloaded from the subscription center http://subscription.autodesk.com
From the website:
General Enhancements (Autodesk FBX File Format Support and Batch Processing Utility)
Support for the Autodesk® FBX® file format improves interoperability between Autodesk® Navisworks® 2010 software and other Autodesk products, while a new batch processing utility offers improved productivity for existing Navisworks users.
Autodesk FBX File Format Support
Support for the Autodesk FBX file format improves interoperability between Navisworks 2010 and a range of other Autodesk products, including Autodesk® Maya®, Autodesk® 3ds Max®, and Autodesk® Softimage® software. Users can import FBX data for viewing and analysis in Navisworks 2010, and also export projects in the widely used, platform-independent format.
Capabilities include:
Import and export of FBX file format
Support for FBX geometry, plus some properties and textures
Ability to combine files from multiple design applications into a single project model in Navisworks 2010, and export the integrated model into 3ds Max for professional visualization
Batch Processing Utility
The new batch processing utility offers improved productivity for Navisworks 2010 users. It supports the automation of common tasks such as generating lists of files, combining files, and converting files. Users can schedule the time of batch processing to optimize allocation of resources.
Capabilities include:
File list—produces a text file containing a list of the paths and file names of all design files used in an integrated model
File combine—enables users to automatically import a batch of files of any supported format into a single model
File convert—enables users to automatically convert a batch of supported files into individual Navisworks files
Note: The multilanguage executable file contains content in English, French, German, Italian, Japanese, Korean, Russian, Simplified Chinese, and Spanish.
Before installing this content, please ensure that you have installed the Autodesk Navisworks 2010 Service Pack 1 or the Autodesk Navisworks Manufacturing 2010 Service Pack 1. You may download the required service pack through the Autodesk Navisworks Services & Support section at Autodesk.com.