After several months of waiting, Skulltag 98b has been released. It is mostly a maintenance release and fixes several server-side crashes and desync issues. Notable cosmetic updates include a new server dialog for Windows users, Maxim Stepin's HQNX filter support, and several scripting updates from later ZDoom revisions. More details about the release and the 98a -> 98b changelog are here. You can download it here.