FreeOrion

Version ID: 0.4.6+ [2017-03-27.8f1b013]
(Attached .SAV file for reference)

When settling a planet with Ancient Ruins, the SitRep announces discoveries on the next turn, but I am not awarded with the technologies... Didn't have the tech researched, so it shouldn't have announced a discovery in the SitRep, right?

I checked your save file -- the sitrep was for another empire's Ancient Ruins discovery. When it is your own it is worded more specifically, naming the actual planet (and I think not referring to rumors). It was just a fluke coincidence that this happened the same turn you settled a planet with Ancient Ruins.

D'oh. Sorry... happened on the same turn as I colonized. Should have occurred to me that it was someone else coincidentally colonizing at the same time.