Oh, that's an old screenshot from The Kingdom Expanded. (TKE) It's another engine remake under development, although they've been kind of quiet recently. You found it in my mission editor's hints, not the KaM Remake.
To install the KaM Remake, first download r1793:
http://krom.reveur.de/KAM_Remake/KaM_Remake_Multiplayer_Demo_20110613.rar
Then patch it to the latest version r2087:
http://castlesand.googlecode.com/files/KaM_Remake_r2087.rar
Future demos will be less complicated to install, with an EXE installer.
Our Remake will have fog of war eventually, but it's disabled for now.
Let me know if you need more help,
Lewin.