For anyone else looking for the weights which as far as I can tell are not linked in the article:
Base model: https://huggingface.co/Zyphra/Zamba2-7B
Instruct tuned: https://huggingface.co/Zyphra/Zamba2-7B-Instruct
replies(1):
Base model: https://huggingface.co/Zyphra/Zamba2-7B
Instruct tuned: https://huggingface.co/Zyphra/Zamba2-7B-Instruct