Revit Architecture 2011 Update 1 Available

Autodesk has released Web Update 1 for Revit® Architecture 2011.  Both 32-bit and 64-bit versions are available, and one download will take care of both the Revit® Architecture version and the Revit® Architecture Suite version. 

You can get the update from the following webpage: 
Revit Architecture Update Download

According to Autodesk’s update list, following are Revit® Architecture 2011 enhancements in Web Update 1:

1.  The list of supported video cards and drivers has been updated.
2.  Improves stability in working with families.
3. Improves stability when deleting views.
4. Improves stability when export to gbXML.
5. Improves stability when view “Analytical Surfaces” in the Export gbXML dialog.
6. Correct export of embedded curtain walls to gbXML.
7. Improves stability when export to DWG.
8. Improves stability when export a split view with shared coordinates to DWG.
9. Respects crop region with blocks when exported to DWG in wireframe visual style.
10. Correct placement of annotation when exported to DWG.
11. Improves stability when Export to DWF.
12. Improves stability and performance when working in the Materials dialog.
13. Improves IFC import to display a warning when encountering a geometry issue that would have previously caused instability in some cases.
14. Improves Properties Palette and canvas interaction that caused unstable graphics if family regenerations were interrupted.
15. Updates to placed instances will now occur when reloading a Family Parameter into project environment as a Reporting Parameter.
16. Improves In Canvas Parameter Labeling to allow a Reporting Parameter to be created when an Instance or Type Parameter could not be.
17. Disables Reporting Parameters between In Place Families and Reference geometry.
18. Correct parameter names display within the Decal Dialog.
19. Improves consistency between Revit and Max when exporting lights with IES files via FBX.
20. Restored custom quality setting that controls number of refractions in a rendering.
21. Improves the performance when adjusting the exposure of a rendered image.
22. Improves issues encountered when rendering elements with different phase settings.
23. Repairs upgrade issue with certain light fixtures using IES files.
24. Repairs printing issue where Scope Boxes from Linked files were visible despite Print settings turning them off.
25. Ensures correct orientation of Elevation tags when tag family is edited.
26. Improves stability when switching among the tabs in RVT Links Display Settings.
27. Improves stability when ungrouping arrayed elements.
28. Improves Filter Rules.

Autodesk® Revit® 2011 API Enhancements:

1. ElementParameterFilters now operate properly against ElementType elements
2. Improves stability when saving a family and there are event subscribers for Save or Save As.
3. Closes the Family editor environment after loading a family via the API
4. Improves stability when using selection APIs to pick grid elements.
5. Dynamic Model Update: GetChangeTypeGeometry() now triggers properly when active type is changed
6. Improves stability for Dynamic Model Update: when registering updaters and more than one application is registered
7. The new API SunAndShadowSettings.CalculateTimeZone() uses Revit’s mechanism to calculate the time zone value for a given latitude and longitude. This calculation is more accurate than the results obtained from City.TimeZone.
8. Improves performance of display of Analysis Visualization framework when Hardware Acceleration is on.
9. VSTA is now allowed for multiple concurrent sessions of Revit; editing the same module by two sessions is prohibited
10. VSTA: Document-level macros no longer become corrupted when the document is workshared and the macro is edited by more than one concurrent session
11. Improves stability when calls to NewFamilyDocument() and PickObjects() are used in sequence
12. VSTA: Revit no longer prematurely exits when opening a project containing corrupted macros
13. The Idling event no longer generates a journal comment for each invocation 

Autodesk has also released Web Update 1 for Revit® MEP 2011 at the following location:
Revit MEP Update Download

Autodesk has released Web Update 1 for Revit® Structure 2011 at the following location:
Revit Structure Update Download