DOOM Retro v2.5.6 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.
• The effects of changing the r_corpses_color CVAR are now immediate.
• A bug has been fixed whereby the player would restart the current map immediately upon death in some rare instances.
• TAB and SHIFT + TAB may now also be used in the console to autocomplete the parameters of most CCMDs and CVARs.
• When entering an alias previously created using the alias CCMD, the alias itself will now be added to the console’s input history rather than the contents of the alias.
• Minor changes have been made to some of the text in the console.
• The console’s background will now be updated if opened on the credits screen.
• Changes have been made to the status bar’s background when the r_detail CVAR is high.
• The maximum value that the s_channels CVAR can be set to is now 64.
• IWADs and PWADs can now be specified on the command-line without a .wad extension.
• The slight current enabled using the r_liquid_current CVAR will no longer be applied to liquid sectors that also have a BOOM-compatible scrolling effect.
• When using the idclip cheat, idclip will now be displayed in the console rather than idspispopd.
• A crash will no longer occur when trying to display the spectre in DOOM II’s cast sequence.