I.E.S. Version 5.9.1 for Revit 2010!

Version 5.9.1: Now compatible with Revit 2010

Integrated Environmental Solutions is delighted to announce that the latest edition of the software, version 5.9.1 has just been released and is now available for download along with the updated Revit plug-in.

Download version 5.9.1 TODAY!

This new version of the software is available for download through your software installation via IES Online > My User Area.

Full details regarding all software updates in this version are contained in the updated Release Notes and New Features documents.

Also... 

Autodesk Green Building Studio has a Beta plugin for 2010.  I have used it and it works very well... Check it out!