I saw a message asking to rebook all HD programming on Sky Sport 3 after the 17th of July. The message on Sky's website says:

On Tuesday 17th July, any future bookings, including series linked programmes on TVNZ Kidzone24, CNBC, SoHo (Standard Definition only) and SKY Sport 3 (High Defintion only) will need to be deleted and rebooked.

I also noticed all the sport after the 17th of July doesn't have the HD beside it on Sky Sport 3 after the 17th of July in the EPG.