Cross Cult, the publisher of German translations of Star Trek books, have revealed two new covers for forthcoming releases, on their Star Trek books Facebook page. Their take on The Klingon Hamlet will be known as Der Klingonische Hamlet, when they publish the Klingon and German edition this December. The new cover is quite similar to the original US release, but a bit more embellished:
They have also posted another new design for their translations of the New Frontier series. Here's Gods Above, which will be released as Mehr als Götter next July.
The latter of the two covers here was credited to Martin Frei when Cross Cult posted it, the former didn't note the artist, but as every new cover cover from Cross Cult is by Frei, I would suspect he created that one too.