Yeap, however I think that the mod tools won't be released in the next few weeks, if you know what I mean.
there are lot of important things to do for the devs, like tweaking, balancing, bug fixing, improving the strategic AI...and the list continues.
Yhere will be mod tools in the first patch. They might not be as complete as some of you might wish but there is no reason why they can't be updatted further in later patches. As of now you can add or alter units pretty much in any way you want. You can rename and alter nations etc. You cannot at present change or disable spells or items.