That depends.
Its my understanding that Warbirds was one of the few money generating games for the company.
...of course.. they don't have any programmers working on WB 2 anymore.. just money rolling in.
I do, however, believe they would still be banking on WBIII to carry them for a few more years. Seems to be silly to make serious cutbacks there. I haven't heard that they have been THAT silly yet.
AKDejaVu