I'm just looking at it now
Interesting read. The part in italics was interesting, good touch by Firaxis. I guess single regicide would be a quick death. I wonder what the playable civs are.
First Screenshot: Why is Paris on Fire?
Last Screenshot: Ooh, Tar. It doesn't seem like they have any tar throwing people for Castle Seiges

But Byzantine seems like they could use it.

Does anyone know what "Krak des Chevaliers" is?
Black Death seems interesting. It appears to be timed (maybe some kind of slight events trigger?)
EDIT: I just noticed a bunch new stuff by going to the media page.
Wool - Luxury resource
Spy - Detects invisible assasins, 2.2.1 treats all squares as roads
Splinter of the True Cross - German Relic
Inquistador - Detects invisible, all squares as roads, 4.1.1 (nice attack)
Crusader - 4.3.1 40 shields
Crown of Thorns - French Relic
Assassin - 5.1.1 (OK, that's a nice attack

), invisible, sees invisible
Holy Grail - English Relic
Shroud of Turin - Relic of the Burgandians
That's about it.