Source:http://ftr.wot-news.com/2014/08/14/neubaufahrzeug-model/
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Hello everyone,
大家嚎， 

ever heard about Neubaufahrzeug? Well, in case you haven’t, it’s a pre-war German medium/heavy tank, that was actually used during the invasion of Norway by the Germans. In case you are interested in its detailed history, I wrote about it here (just scroll down a bit).
你听说过Nbfz重型坦克吗？就当你没听说过好了，这是辆战前的德国中/重坦，在德国入侵挪威的时候有被使用过。如果你想更进一步了解这段历史的话，我在这里写过一些关于它的东西（向下翻翻就好了） 

Neubaufahrzeug (Nbfz) was also at one point intended to be a tier 3 German premium heavy tank. The first mention of this vehicle (in the game) came in October 2013 with the 8.9 ASAP video, where it was “accidentally” shown as having a place in the tree:
Nbfz重型坦克（Nbfz）在某个时间点曾经是作为一辆德国的3级金币重坦出现的。第一次提到这辆车（在游戏中）是在2013年的10月，与8.9的ASAP视频一起放出的，在视频中它“不小心”的出现在了游戏的科技树中

Ever since, players have been asking, what happened to it – well, for some time at least, after some months, it was forgotten. It was never apparently implemented due to the fact it carried more than one gun and became the victim of “no multigun mechanism” issue. An interesting thing though: apart from the mention in the tree, a model seems to have existed as well.
从那以后，玩家们就一直在问这辆车怎么了—呃，至少问了一段时间。在几个月之后，大家就把这事给忘了。这辆车从来没有实装过，因为它有多与一杆的主炮，也就成为了“没有多炮塔机制”的受害者。有趣的是：除了在科技树上提到过这个车，这辆车其实是有建模的。

This is actually a Krupp version of the Nbfz, the Rheinmetall one was kinda different. Unfortunately, the chance of seeing this tank before the multigun mechanism is implemented is quite low.
这其实是是Nbfz的克虏伯版本，而莱茵金属那个版本又有点不太一样。不幸的是，在多炮塔机制实装之前想看到这辆车的机会是很低的。