DOOM Retro v2.6.8 is now available. It may be downloaded here, and its release notes are as follows:

• DOOM Retro now uses SDL v2.0.8 and SDL_image v2.0.3.
• Optimizations have been made to further improve the overall performance and stability of DOOM Retro.
• Improvements have been made to how both sprites and the shadows they cast are rendered.
• Minor changes have been made to text that is output to the console.
• Player messages can no longer be present in screenshots taken using the PRINTSCREEN key.
• Spectres and the shadows they cast are now displayed correctly when the r_textures CVAR is off.
• Further improvements have been made to the support of DEHACKED and MAPINFO lumps.
• The player’s face is no longer updated in either the status bar or the default widescreen HUD when freeze mode is on.
• The screen is now rendered correctly while the player has an invulnerability power-up and the r_textures CVAR is off.
• A bug has been fixed whereby some map-specific fixes enabled using the r_fixmaperrors CVAR weren’t being applied.
• Hanging corpses no longer bob up and down if above liquid.
• Corpses can no longer trigger line specials when sliding over them.
• Fixing a bug present in Vanilla DOOM, monsters will no longer momentarily freeze when trying to open certain locked doors.
• The correct map names will now be displayed when playing Freedoom.
• An error will no longer occur when trying to load HacX: Twitch ’n Kill.
• The screen will now fade to black upon quitting from either Freedoom or HacX: Twitch ’n Kill.
• Liquid sectors are now rendered slightly higher when the r_liquid_bob CVAR is on to improve the bottom edge of surrounding tileable wall textures.
• Projectiles will now pass through map decorations when the infiniteheight CVAR is off.
• Corpses in liquid no longer bob up and down in time with each other.
• The positioning of the monsters in DOOM II’s cast sequence has been improved when the r_fixspriteoffsets CVAR is on.
• The underscores in the message displayed when using the IDBEHOLD cheat now align correctly.
• A bug has been fixed whereby savegames could become corrupted in some rare instances.
• A bug present in Vanilla DOOM has been fixed whereby certain switches wouldn’t turn on when used by the player.
• Repeatable switches that are adjacent to a moving sector will no longer make a second sound when they turn off.
• The alternate widescreen HUD and player messages are now black rather than white when the player has the invulnerability power-up or the r_textures CVAR is off.
• The vid_screenresolution and vid_windowsize CVARs are now validated better at startup and when changed in the console.
• Player messages will now always be positioned correctly when the r_messagepos CVAR is changed from its default of (3,2).
• The map title in the automap is now always positioned correctly when the r_messagescale CVAR is small.