Sports Business Journal (no link, sub req) reports that MLS is ending its deal with MLB Advanced Media. MLS will have a new in-house designed web home by March 2010 with new team sites to follow. This was approved by the MLS BOG in July but this effort is now supported by a new SUM online advertising network of 29 soccer websites. Estimated cost of developing this new infrastructure in the millions according to the article.
This seems to be the result of both MLS teams wanting a more robust web vehicle and MLBAM wanting to concentrate on core MLB activity. In any case this bodes well for increased and improved online content.
Edit: the thread title is a little misleading, it's unclear how much autonomy the team websites will have in this new online presence.