We signed off on SP1 at 3:45pm yesterday (Nov. 28, 2007), and both the 32-bit and 64-bit final versions of SP1 are available for free and immediate download from http://go.microsoft.com/fwlink/?LinkId=104387.

See http://msexchangeteam.com/archive/2007/11/29/447611.aspx for the big announcement!

A list of features in SP1 can be found at http://go.microsoft.com/?linkid=7844544.

The SP1 Release Notes (read these, they are very important) can be found at http://www.microsoft.com/downloads/info.aspx?na=22&p=7&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3d5770bd59-376e-42ec-b940-be6225cd97ff%26DisplayLang%3den.

SP1 UM Language Packs are at http://www.microsoft.com/downloads/info.aspx?na=22&p=1&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3d18426838-7733-4712-8b98-d6d1fd8c2310%26DisplayLang%3den.

The latest SDK for Exchange 2007 SP1 is at http://www.microsoft.com/downloads/info.aspx?na=22&p=4&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3d190f71a4-7b5f-4a4c-99ba-9bd032e16e15%26DisplayLang%3den.

Product documentation for SP1 can be found at http://technet.microsoft.com/en-us/library/bb124558.aspx.

Finally, Forefront Security Exchange Server SP1 has also RTM’d:

Enjoy!!