2006 Kona Lottery / GTG Validating Race

Just looking at the '06 IMH lottery info on ironmanlive, and it notes

Athletes who are selected through the Ironman Lottery must have completed a Global Tri Group (GTG) endorsed event within one year of the 2006 Ford Ironman World Championship to validate his/her lottery slot.

Is this new? I seem to remember that the rules were silent about which races could be used for validating, and referred to IM / HIM distances only. Are “GTG Endorsed Races” are essentially IM or 70.2 WTC races?

I think it is new. I remember it merely requiring the completion of a half-iron or longer distance tri. I think it would count non-ironman branded, but distance qualifying events.