Another follow up. Most of you will have already seen this thread:
http://f80.bimmerpost.com/forums/sho....php?t=1271952
which confirms that all of the engine changes (30i and 40i models) that were in question for the US are indeed coming this year. If and when a production schedule for MY2017 surfaces that correctly shows these models, it'll be shared in a new thread so that this one can be superseded.
Everything will have switched over by the end of July except the F10 which goes until the end of October (when it will be retired to make way for the G30).