Yup, it's all going. I always envied their independence over Vauxhall with regard to their products. (stuff like Corsas, Astras and Vectras made its way over with a simple badge swap, but the rwd platforms got very, very heavily adapted for local use, and made some great cars. The Dubai Police thought them good enough to use!
They're going to be just a name now, though, with assembly elsewhere
No doubt GM Worldwide will become that bit more poorer without them. They were the only ones making a decent rwd drive platform at all, by the end. Presumably when the current VXR8/Commodore is axed they'll 'replace' it with a new fwd Insignia. After it flops Holden will be wound up, and replaced with Chevrolet and/or Opel.
Holden started out in the 40s by making heavily modified Vauxhalls, odd how things come full circle!