Currently so long as you have found an AI planet (ie you have explored that sector, even if the ai colonises the planet after you have explored the sector), you can see what that planet is building, and how long it will take and stuff just like you can see your own planets in that list. You do this by going to the colony/ship list and choosing foreign. Is this intended or a bug? Note, this is with no espionage whatsoever. It seems kind of cheap to be able to know exactly what the AI is building on each planet without having any espionage on them. It's not that huge an advantage, granted, but it can help. For example you can see if the ai starts building a trade good/wonder, and know when it will finish it, so you can always beat it to the punch. I'd have no problem with this if it required say low espionage levels, but to have it be free seems kinda cheesy to me.