Here's a collection of some information and impressions found in our own futuremyth forum.

Zinfandel said that the following maps are included with Myth III:

Tour de Forts (4 team light, 4 team dark, 2 team light, 2 team dark)
Season of Slaughter (5 starts, looks a little bit like Grave)
Over Myrgard (6 starts)
Ramparts (same options as Tour de Forts)
For Carnage Apply within (light, dark)
Creep on the Borderlands (light, dark)

Mat Cauthon T has found the multiplayer game disappointing , furthering with:

The text is very hard to read, most games are not implemented(Ie assassin, hunting, scavenger hunt), unit speeds feel to slow and a only 6 different maps with may variations are included.

The graphics and lighting are very impressive as are the units themselves, it just needs some tweeking still.

Nothing too unexpected there. At least he feels there is hope that these problems can be alleviated with a patch.

ax also posted his initial impressions:

GameSpy:
not bad design. although, Fonts though are horrible. It's not readable at 640x480 (meaning that i have to run at 800x600). It's also dark. Open games are red, closed gray. It also shows join/leave and sounds for hitting enter (kind annoying). You also cant dbleclick to join a game, you have to hit enter.

Ingame:
Fonts still bad. there is no postgame restart, nice. Theres a bug with saving which allows you to keep saving films if you go back and forth to postgame.

Games:
All i played are creep, carnage and Tour de Forts. Kinda slow (PIII 650, Voodoo 3). FPS counter useless. Going to OC to 806 to see what that does to fps. LOD works. Fonts also horrible. Tro iron warriors are leet. Water is messed up on Voodoo 3. Warrs dont block (so thrall own them). 'Blue' units arent blue. There is no HEY just hey. The life counter doesnt go down, but it does change color.

So far, nothing has been stated that wasn't really expected. The game took less than a year to complete, so there were bound to be little things that would need to be fixed. Hopefully, we will see some patches soon enough.