Announced, and sure to be a popular download.
Firstly, there is a ton of information released on this service pack and the SharePoint team have done well to list it.
the packs...
WSS Specific Download Locations
• Windows SharePoint Services 3.0 Service Pack 2 (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyId=79BADA82-C13F-44C1-BDC1-D0447337051B
• Windows SharePoint Services 3.0 Service Pack 2 (x64)
http://www.microsoft.com/downloads/details.aspx?FamilyId=79BADA82-C13F-44C1-BDC1-D0447337051B Windows SharePoint Services 3.0 Language Pack Service Pack 2 (x86)
• http://www.microsoft.com/downloads/details.aspx?FamilyId=085E5AC8-58F6-4CF9-8012-33B95EE36C0F
• Windows SharePoint Services 3.0 Language Pack Service Pack 2 (x64)
http://www.microsoft.com/downloads/details.aspx?FamilyId=2C2B6CAF-B46D-45EB-AC4D-DEAAA48C3A2C
MOSS Specific download locations are here:
2007 Microsoft Office servers Service Pack 2 (x86)
• http://www.microsoft.com/downloads/details.aspx?FamilyId=B7816D90-5FC6-4347-89B0-A80DEB27A082
• 2007 Microsoft Office servers Service Pack 2 (x64)
http://www.microsoft.com/downloads/details.aspx?FamilyId=B7816D90-5FC6-4347-89B0-A80DEB27A082
• 2007 Microsoft Office servers Language Pack Service Pack 2 (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyId=01C6A3E8-E110-4956-903A-AD16284BF223
• 2007 Microsoft Office servers Language Pack Service Pack 2 (x64)
http://www.microsoft.com/downloads/details.aspx?FamilyId=66C5026F-9F47-4642-8378-2526918009FA
Part of the pack is a tool to check for upgrade issues ready for SharePoint 2010.
For a slightly more in depth post, read Joel's Post on the Service Packs