Square Enix is working on a few Halo: Reach figures and I must say, they look better than the McFarlane line that's in the works. The Play Arts figures come in at about 8 to 10 inches each and appear to be pretty intricate.
As Colette mentions in her video preview, these figures are only prototypes and may not actually be released. Hopefully Square gets the clear as these are pretty rocking.
Check out Tomopop for more toy coverage from San Diego Comic-Con 2010.