Everything is done on DGB's side for Trezor to support it. Trezor requested DGB do some technical things which have been completed. I contacted Satoshi Lab's and asked them about Digibyte support and when it will be ready. They said it is a project on their agenda but have other higher priority projects they need to complete first. I suspect is is mostly Trezor model T which has been delayed a month to February. Hopefully when the Trezor devs have more time on their hands they can complete the Digibyte support project. It is coming, they just won't say when.