First, if you want to read a long post on the matter, Susan Bradley has provided that here. However, if you are a “~” like me, then you want to know one thing…
Does Exchange Service Pack 2 work on SBS2003? YES!
However, if you are working on a client site, please make sure to read Susan’s blog on the subject.
You see, Susan has split us down into two groups. Where as I believe that consultants, or “people like me” are actually both. The key is to have a test bed system (and by that I mean more than just Virtual PC / VMWare).
Oh… for those that have not figured out how to get your 75Gigs… Go to the Exchange Team Blog post here
If you’re intersted in hearing some more follow-up thoughts on the Susan and NickW’s posts, check the following link: http://addicted-to-it.blogspot.com/2005/10/sbs-thoughts-on-patch-validation.html
I tend to be more in the "V" camp, than the "~" camp. But there’s an important business component to this discussion you should consider.