Just a quick update, there seems to be a rumor spreading around the US server that the patch 8.5 will bring the Fog of War in randoms. It originates in this thread: http://forum.worldoftanks.com/index.php?/topic/204829-confirmed-fog-of-war-will-come/
The thread claims that there was an answer by Storm regarding this, it even quotes the answer, but later claims it was deleted. I've been checking the RU Q&A thread mentioned whole day (with 2-3 hour breaks though) and there was no such answer there. Furthermore, the quoted text is weird, the order of the words isn't right.
Therefore, unless some confirmation is offered, I assume it's a complete FAKE and urge dear readers not to believe it.