Same mic, same company, no difference.
DPA was a part of B&K and spun off a couple of years ago as a separate company. Different markets, different approaches but same quality. They still cooperate a lot, to the extent that a lot of things labeled DPA are made my B&K. Just one example, the 4003/4006y capsules are marked B&K.
The 4011 is discontinued though, superceded by the 4011-TL which is transformerless. You make your pick there.