Hi,
The only new GHD is the Mk4 launched earlier this year. It has a more rounded profile to make "curling" with them easier and a safety auto cut out if they are left on and not used for 30 mins. Still no variable heat control. So I prefer the Hair Tools FHI from Hairdressing | beauty | equipment | salon | furniture | straighteners | scissors | supplies as they get hotter (232 degrees) and have a variable heat control.