GT skis are still in production. Seemingly, they had some issues back in 2016, but they are back in full production. Seems like Epic changed its color to all white with an orange tip... so don't expect to see them black for a while.
My take on GT skis:
They are fantasticly light, and light surfskis are clearly under rated - they are nearly miraculous for ultra quick accelerations in open ocean. As stated above, careful when carrying them. I was lifted off the ground while carrying mine - granted, I am a lightweight.
Bottom line, if you can afford them (nearly $5200) and if you will take care of your ski, get the lightest one in your favorite brand. Do keep in mind that GT skis are extremely stiff - borderline too stiff for older people. Think of it like this:
An ultra light rigid tail mountain bike will be a joy when going uphill, but will break old people's backs - that's your GT.
A very light full suspension mountain bike will still be quite light, yet offer a tad more comfort - that's a non-pre-preg carbon ski.
Ludovic
(Brittany, France)