This is a copy and paste from the Crymod First page.

I have to say, Finaly Crytek made information about the futur modding ability of Crysis2
So
First : have to apologize beeing rude, and thinking that Crytek will forget the "casual modder"
Second : its a fantastic new !!

Hello to all of you.

Here at Crytek we value our community, and we love what you do with our engine. In recent times our focus has been heavily on the development of Crysis 2, however our modding community has been, and remains, very important to us.

So, I wanted to tell you about our plans for supporting you in the future with some really exciting news, which I want to share with you now. Modding with the most powerful game engine is coming back!

We want to see what you guys can do with CryENGINE 3 and we hope we'll be as amazed with the things you create as we have been over the past few years. This time around, we're going to do things in a different way - offering you the right tools to achieve your vision.

First of all, we will be launching an Editor for Crysis 2 early in summer. This will allow you to build new maps, items and more custom content for Crysis 2.

Awesome news.