Well, I assume people may have fell for it… (I too took the announcement at face value).
Lesson learned is: Never take these in game announcement too seriously until you check the Royal Revolt 2 “Official Announcement” forum to see if it is indeed a valid event. I will assume that any announcements displayed in two places are no mistake.
And yes: one can check the wiki first for the non-event Gold costs to see if this is indeed lowered when assuming an event is in play.
Good PR would btw be to have those that did start an upgrade of troops/spells to lower the costs and time needed in accordance with what the event would have “saved” a player on those upgrades only .
Considering FG would have to go over the logs and therefor would not be working on bug fixes… Hmmm never mind the suggestion. I rather they work on squashing bugs first.