Spore was fully playable, in final testing and was "roughly" six months away from release. Considering that we already knew the game wasn't due until at least April of 2008, this news doesn't come as a huge surprise, signs have been pointing to Spring of 2008 for quite some time.
But who knows what could go wrong between now and then, right? It's a simulation of everything that's ever happened, for crying out loud. Your entire life story is contained within, as well as the life story and memories of everyone you've ever known. Forget about looking forward to playing it, we're just hoping Wright finishes it before it becomes sentient and kills us all.