The camo model was the "Vixen Deluxe" offered by Excalibur for about a year or sobefore they changed the riser to angle the limbs forward andoffered the Phoenix, exocet 200, and exomax. I guess they figured the new models would be the majority of the sales and dropped the camo Vixen Deluxe from the lineup.
The limbs are the same on all Excaliburs, the only difference from one model to the next is the rail length.