The Solar Radiation Technology Preview for Revit is available for download from:
With the recent release of Service Pack 2 for Revit, the combination of the technology preview and the service pack results in:
Since I am on sabbatical right now, my participation is limited; however, rest assured that I did pass this information on to the Solar Radiation Technology Preview team. For the moment, you may wish to complete your evaluation of the technology preview and send resulting feedback to [email protected] before applying Service Pack 2. Ideally the team would provide an update, but I am not sure of their plans (since I am out of the office).
-- Scott Sheppard