The 2012 BMW 1 Series will be built at the BMW Regensburg plant.
"Der neue BMW 1er - gebaut im BMW Werk Regensburg"
the new BMW 1 Series - built at the BMW Regensburg plant)
So what about the 1 Series production lines in the BMW Leipzig plant where the 1M is currently built (alongside the 1 three-doors, 1 Coupé, 1 Cabrio and X1) ?
I mistakenly thought that all 1 Series were built in the Leipzig plant and that, due to the second gen 1 Series, building the 1M after December 2011 became materially impossible because of a change in production lines (apart from policy reasons not to mix two generations of 1 Series models).