ISA Server 2006 SP1 is Out
The ISA Server 2006 SP1 was release today (couple of minutes ago) and you can download from the link below: https://www.microsoft.com/downloads/details.aspx?FamilyId=D2FECA6D-81D7-430A-9B2D-B070A5F6AE50&displaylang=en
We do have some good articles out there already that talks about the functionalities of this release, review some of them:
Jim Harrison reveals ISA Server 2006 SP1
ISA Server 2006 SP1 Demos by Yuri Diogenes
Your New ISA Firewall: ISA 2006 Service Pack 1 (Part 1) by Tom Shinder
ISA Server 2006 Service Pack 1: New features and enhancements by Marc Grote