While talking on CBS's Early Show, Bryan Singer (director of X-Men) said he plans on adding a Southern smoothe talker (Gambit) and a circus freak (Nightcrawler) to the mix in X-Men 2. Also, it is likely that a CGI created Beast will join the cast.
And for female X-Women? No new X-Girls are rumored to be in the sequel at this time. But we will all be praying Psylocke will be in it...