here's what I found on their website about the 330's.
http://www.usairways.com/awa/content...sreleases.aspx
"Today's announcement also includes 10 A330-200 aircraft with deliveries starting in 2009 and flexibility to convert to A330-300 or longer range A340s.

The new A330-200s share fleet commonality with US Airways' fleet of nine existing A330-300s, but with a longer range and slightly smaller seating capacity. Finally, these deliveries will facilitate the eventual retirement of US Airways' B767 fleet. " ---6/18/2007