A minor ,but interesting, glitch.
In my [DA]games, when you click on another Civs planet, then bring up the Fincance Management menu (f4) and adjust one of the sliders, the build time on the presently queued up ship will appear on that planets starport window on the main interface menu bar at the bottom (under the "ships in orbit , and above the "spy" and "speak to" buttons). If youre *supposed* to be able to see this info, then its a glitch that it doesnt appear until you tweak the slider.
It will do this for any civ, regardless of espionage level. Not really useful enough to exploit (in other words, like all espionage info in the game), but Im sure its probably not supposed to do that.