The Parallel Loop Task, recently released in beta by Cozyroc Software, "can execute multiple iterations of the standard Foreach Loop Container concurrently. In tests, a CPU intensive sequential process when executed in parallel on 4-core machine was executed 3 times faster compared to the sequential." This new task appears in Beta 2 of the Cozyroc package, SSIS+ 1.5.
For more information or to try out the Parallel Loop Task...
See Cozyroc at SQL PASS in Seattle this fall.