The BBC is reporting that the number of teams that will automatically qualify for the 2011 RWC will increase to 12 (from 8 for the 2007 RWC). This should help with fixture congestion before the tournament, and will give greater importance to performances at the 2007 tournament.
More info at the BBC site - http://news.bbc.co.uk/sport1/hi/rugby_union/6644163.stm