Well, The ISA Service Pack 2 is available for you few, but passionate folks who are running SBS Premium with ISA 2004 installed.
The service pack comes with a roll-up of all the hotfixes currently released, and a few new features. Don't get all excited just yet. The features are primarily focused at Enterprise solutions including BITS Caching, HTTP Compression and Traffic prioritization.
As The SBS Diva mentions, make sure you install this from in front of the physical box. During the install, the box enters lock-down mode in which case you won't have any traffic flowing inside and outside of the network. Oh yes, and another thing, this means that your folks won't be browsing the Internet during the upgrade also.
So choose your Install time wisely ....
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