http://www.trumpeter-china.com/index.php?g=home&m=product&a=show&id=3603&l=en
It reminded me too much of a (maybe) release from Modelcollect:
http://www.modelcollect.com/german-wwii-flak-41-5cm-gun
Modelcollect has a habit of announcing releases which don't materialize, but do appear under another branding. Wonder if this is one of them.

Coincidence??