From Neil at Forge World Open Day:
@NeilChallis: Primarch Fulgrim is finished! Will be shown at Horus Heresy weekend! Ferrus Manus next, pencilled in for GD2013! Simon Egan said. Also, confirms that there will be a Malcador the Sigillite model and probably Garro later. Hinted very strongly that Argel Tal of the Word Bearers is in development!