This is good news for those of us looking to tune the engine a bit more of the 1M. As you can see Dinan has already done the work to upgrade the N54hp in the 335is. It shouldn't take long for the 1M to be available.
Of course Dinan won't be the only tuner to offer updates, however they do still offer a same as OEM warranty.
http://www.dinancars.com/shop/index....l=335is#page=1