Will it be an executable file like the previous version, 0.2.0?
<sarcasm mode> 
Of course, not! It would be a tar.bz archive with MWLL sourses and some libs, which you should compile by yourself(you'll have to have MSVS and DX SDK installed). Buf before that you'll have to modify sources, depending on what OS you're running(XP, XP64, Vista, Vista64, 7). After that you just pack everything into crysis recourse files and copy them into crysis/mods/ folder. But after that it would be much easier to customize, than 0.2.0, as there is already an actionmapper available. Just add support of new 0.3.0 commands into it and tweak existing ones to work properly, and it would be ready to work with 0.3.0 actionmaps.
</sarcasm mode> Personally, I think 0.3.0 wouldn't be a problem to install.
