Well all I can tell you is that yes there has been a few updates, eventing bonuses no longer have an affect and cool competitor has been replaced with rolling rodeo to help horses roll better, Polo has changed, and players can no longer run the polo events, they have to wait for an op to do it. umm Warmblood is now the main bous for show jumping, and sport gets second. Using an NPC has teh same affect as riding yourself with the proper skills. A few little fixes, and you can't make millions in the trials anymore as there has been an earning set to prevent that
