By Applerocks, 30 May, 2019 Forum macOS and Mac Apps does any one know if night owl wil stil work on up coming Mac releases? Options Log in or register to post comments Comments Maybe It's difficult to say. It was updated a while ago, so it's 64-bit at least. So unless Apple makes some massive changes to a component it uses, it'll probably keep working and if it breaks I wouldn't be surprised if the developer updates it. I wrote Nightowl off a couple of times already, and was surprised that it eventually got updated not that he's been doing a good job keeping up with new Twitter features like quoting, but the basics still work.