Expiring arbiters who have said they will not seek re-election: (Please reply with others who have said as much, I'll update this top level post) 1. Morven (here)
Expiring arbiters who have previously won re-election: (Please reply with others who have pulled this off, I'll update this top level post) 1. ?
Number of open seats (normal): 5, plus one extra open one since Paul August retired, for 6 total. Paul's spot is only good to December 2009, when he would have expired anyway. The others are currently set to be the normal 3 years.