Eight teams participating in the league in 2007 did not return for the 2008 season, including the 2007 champion Lakeland Thunderbolts. The AIFA became the third league since 2004 (excluding the folded WIFL and NIFL before its folding) to lose its standing champion (the 2004 NIFL champion Lexington Horsemen left to join the newly created UIF and later were in af2, and the 2006 champion Billings Outlaws also left to join two years later). However, nine teams signed on to begin play in 2008, and the league created a Western Conference. In 2007, the team farthest west was based in Mississippi; in 2008, the team farthest west was based in Arizona. Three of the four teams who had won the league championship to that point were no longer active league members.