Scott Latch announce on the AUGI forum that "Update 2 for Autodesk Revit Structure 2010 is now available at http://www.autodesk.com/revitstructure-downloads.
The Update can be applied to all languages of Revit Structure. Currently, only the English download page has the update, but the other language download pages will be available by the middle of next month. Until then users with other languages can download the update from the English page.Please note, the update release does not contain any new functionality. However, we are developing functionality enhancements that will be available to Subscription customers in the near future."
When you follow the link it's a wee bit confusing because the page has a typo - it says Web Update 1 but the Web Update 2 files are there under where it says Update 1.