i had 4 interviews in TX (Colorado resident) which will probably be it for me - i think they stop interviewing in mid-Dec.
as far as odds go, it depends on the school:
for example TX-Tech only interviewed 16 out-of-staters last year and accepted 9 (8 of which enrolled). so, that's about 50%... not too bad.
a school such as UT-San Antonio, however, interviewed 77 out-of-staters last year (out of 286 out-of-state applicants) and accepted 12... not as good.
hope that helped you a bit