Are there going to be any Heroclix events at Wizard World Anaheim 2010?

Doesn't looks like it. Unless a someone does it themselves and pay for it from their pocket.

Right. So far all I've seen mentioned by way of an official presence will be at GenCon and ComicCon International.

Keep looking, though -- as was mentioned, some people will likely try to set something up, even if very casually, at some of the other conventions.

Edit: Looking over the official site it appears that, as per usual, many elements are still up in the air. There's some mention of Warhammer and, more vaguely, of collectible card game events, but clicking on those links makes it clear that's at best a work in progress. Info will likely start filling in with vigor once the Toronto con (March 26-28) has been put to bed.

will Neca/Wizkids be there?