I'm not usually one to post product announcements, but I had to point out that the Service Broker External Activator shipped with the latest (Oct 2008) version of SQL Server 2008 feature pack. It's available here.

Doing a quick "visual diff" with the August 2008 feature pack, I also notice some new PowerShell extensions, SQLXML 4.0 SP1, and a number of items for Reporting Services (including, of course, Report Builder 2.0), Analysis Services (including ADOMD.NET and some interesting datamining report viewer controls) and the SAP BI connector.

Lots of new items.