I agree, and I like your thinking. Could almost copy Open Source wholesale for that section, after converting some of the jargon.
I think a mention in the actual article to the Robowiki would be justified. It is where most of the developments and long running competitions originate (like RR@H). But it might just be at most a sentence like "A great deal of the innovation occurs around Robowiki[External Link], the games premier wiki."
Perhaps a short mention of some of the licensing that occurs in Robocode. Otherwise there isn't really much to say beyond what is already covered.