Yesterday IAG 2007 Service Pack 2 has been launched by the team.
If you want to download it, you will have to download it from your OEM web site. Here is the link for Pyramid Appliances : http://www.pyramid.de/en/products/valueserver_vpn1.php
I advise you to read this POST. It has been writted by Assaf Ronen, the Product Unit Manager :http://blogs.technet.com/edgeaccessblog/archive/2008/11/02/iag-sp2-it-is-all-about-the-application.aspx
If you speak French, I presented IAG and the SP2 to the customers and partners in a webcast last monday : http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?culture=fr-FR&EventID=1032398472&CountryCode=FR
... soon, the links to download IAG SP2 "Virtual Machine For HyperV" .