I've contacted a few retailers here and none of them have any idea when the 8.0ah battery packs will be out even though it says they are available on metabo website. I wonder why metabo is now the one playing catch up in terms of amp hours, although, having said that, I have original 4ah metabo batteries at least 6 years old and I could swear they out perform some other 5ah platforms I own, even though they are extremely well used!