To celebrate the new year, a salvo of new official versions of ports has been launched:
Eternity Engine 3.37.00 "Sekhmet": includes decorative slopes, sprite scaling, widescreen support and more.
GZDoom 1.4.0: include several bug fixes, better portals, and more flexible actor functions.
ZDoom 2.4.0: includes so many new features compared to 2.3.1 that even listing just the major ones would take all day. Many of those are "old" features for those who used GZDoom 1.3.17; but we can list greater accuracy in Heretic and Hexen gameplay, many powerful new options for skill definition in MAPINFO, dozens of new flags, properties and codepointers for custom DECORATE actors, enhanced support of several MBF features, rewritten input code letting one play with a joystick or gamepad without hassles, rewritten archive code adding support for many more formats, IWAD recognition expanded to Ultimate Freedoom, Action Doom 2, Blasphemer and Harmony, and the possibility to compile ZDoom on a Macintosh (Mac binaries not included).