A few days ago a maintenance release of CataBlog went public. It fixes a few debug errors and confirmed my assumptions that CataBlog still works fine with the latest versions of WordPress (4.9.2). I'm hoping now that CataBlog will be removed from the list of plugins that haven't updated their WP_Widgets code. 😉
Even more exciting stuff is coming to CataBlog soon! The next release is aiming to address compatibility with mobile devices, including support for upload and mobile first admin & template CSS.