The SSIS team has just published the first two of a set of community samples to the CodePlex site. Take a look here: http://www.codeplex.com/SQLSrvIntegrationSrv
The exciting thing is that these samples include both a binary redistributable and source code, so you can use them as-is if they serve your needs, and customize them if they only get you part way to your destination. The first two samples are an XML Destination component (this is an oft-requested data flow destination, so this is probably going to be the big crowd pleaser) and a Regular Expression Flat File Source component that provides many capabilities above and beyond the built-in Flat File Source.
You can check out the features on the release page here: http://www.codeplex.com/SQLSrvIntegrationSrv/Release/ProjectReleases.aspx?ReleaseId=15424