Who did the art? Is that a location / ship from the story?
The cover design is by Alan Dingman based on stock images, apparently. It represents a vista on Andoria, which is a location in the story, though the Kumari-class cruiser does not appear in the book (there is an Andorian ship later on, but not at Andoria and probably not of that design).
One part of me wants to get to The Higher Frontier through the post-TMP sequence of Ex Machina and the time travel follow-up, and finally this new one.
There's also Mere Anarchy: The Darkness Drops Again, whose first part takes place shortly after Ex Machina and the rest of which takes place after The Higher Frontier.