I have need of an AntTask (not NAnt) through CCNet. I noticed that there is an issue open for this and it is targeted for 1.9 but I have not seen any activity on it.
If anyone is interested I wrote a PlugIn based on the NAntTask in the CCNet Core library and posted it on GitHub here:
It's functional (I am using it) but some of the changes I made to the NAntTask may not translate well to everything you may want to do with it, so use at your own risk.
I hope you all find it useful.