I had a long holiday in Berlin recently;
Here are two shots of the latest d/d model from MAN to enter service in the last year; there are ND313[?] model , 15 metres long, with two staircases and three doors. they seat 55 upstairs and 28 downstairs. they also have air cond system- very much like HK, although windows can be opened.
At the moment, they form the complete allocation on route M37, and part allocation of routes 100 & M48.
HERE IS 3099- the very first one to be delivered- near the zoo