no, not that is released to the public anyway.   Nothing is that solidified (like we arn't even sure if any of the current existing buildings are going to be in the final the way they are now, or if races are going to have the same bonuses, or any of that)

Well here's a little list of what I've figured out:

• There's atleast 3 levels of cities; outposts, Hamlets, and Villages. The level depends on the population
  
• You can't enter another faction's border without declaring war
• You can regain HP by putting that character into a city for a while
• To get them out of the city, select the city and they should have a round icon on the left. Click it, then click the white arrow that comes up
• When you start researching civilian tech and get to farms, you don't get farms. All you just did was unlock farm research (which you need to swap with civilian)
• Only Hamlets or better can build farms, and you need fertile land to build a farm. The fertile land needs to be next to the city
• Barracks help build units faster

Anything else you need to know I didn't list? I think I may have found every feature in the beta, I'm not sure

Is combat in yet?  Tried running over spiders and trolls but they ignore me.

Yes, as long as you have movement points left on that turn, when you move on top of them, you should get a screen showing the relative strengths of the units and prompted to attack or run.

Once you've researched Mining, possible mining sites appear on the map.  To use them, you seem to need to build a city next to them, much like building farms.

Also, it appears that with some tech, you get a bonus immediately when you start researching it (say 20%), and then every turn you research it, the bonus improves up to some maximum.  This is instead of waiting for 20 turns then suddenly getting a massiv bonus in one hit.  I like it this way.

So while it is very far from being complete, I've got a wiki up that is going to sort of be like a manual. Obviously with a beta changing all the time there'll not be a definitive manual, but I (and hopefully others) will be adding info to it as we go.

http://elementalbeta.wikidot.com/

Sweet.  You rock!