From the Privateer Press website:
“Privateer Press is pleased to present the last online update to the HORDES model rules. These rules represent the efforts of continued testing and development since the close of the field test and will be the official rules for all HORDES competitive and casual play until the release of Primal Mk II and the HORDES Mk II card decks this summer.”
Link to the final update!
Hordes Final Update