DOOM Retro v2.5.2 is now available. It may be downloaded here, and its release notes are as follows:

• Optimizations have been made to further improve the overall performance and stability of DOOM Retro.
• Savegames for DOOM II: No Rest For The Living are now saved in the correct folder, rather than in the same folder as DOOM II: Hell On Earth savegames.
• A bug has been fixed whereby the frames per second displayed by enabling the vid_showfps CVAR wouldn’t display correctly in some instances.
• The fuzz effect of spectres no longer bleeds past the bottom of the player’s view, or into a higher sector when partially obscured by it.
• The spawn CCMD can now be used to spawn monsters in a map when the nomonsters CCMD or -nomonsters command-line parameter have been used.
• The +mouselook action may now be bound to a control. Mouselook will then only work while that control is held down. Releasing that control will then cause the player’s view to spring back.
• Blood will no longer be spawned when crushing the player while they are invulnerable.
• A bug has been fixed whereby the player’s rocket launcher would shift to the left when fired.
• Frames from DOOM’s rocket launcher are no longer shown when firing the missile launcher in Freedoom.