HB 2244 was signed into law on April 6, 2009 making Arkansas the twelfth state to make prosthetic parity law! In addition, SB 1116 passed out of the Virginia House and Senate, as did SB 341 and HB 579 in Maryland, and HF 311 in Iowa.
So...Missouri, Iowa, Arkansas (a state with the word "Kansas" in it - we can dream, can't we?) and Colorado have all passed or are about to pass parity laws. Nebraska has legislation in place, Oklahoma and Kansas are still at stage zero with no one sponsoring a bill.