I saw one of the new Genesis at Lowes the other day. Steve,it comes with the PCI grates,and it looks to be the same size as my '09 Genesis grates.
My only concern with it was the space between the burners. On the older Genesis models.there is about 3-4 inches between the burners,giving a very even heat across the grates. I've even been known to turn the front burner down low to get great results. But on the new models,there is about a 5-7 inch space between the burners. I'm afraid that there would be a cool(er) spot between the burners,giving an uneven heat. Maybe if they had a fourth burner,it might give better heat distribution. This,of course,is just my .02!