Well let’s think about it.
June 23 Mythic Console - Stonehammer
July 7th Mythic PC - July one
July 14th Mythic Console Elemaghrim
August 4th Mythic Console Queen Aurora
August 4th Mythic PC August One
August 25th Mythic Console July One
September 1st Mythic PC - September One
September 15th Mythic Console - August One
October 6th Mythic PC - October One
October 6th Mythic Console - September One
October 27th Mythic Console - October One
November 3rd Mythic PC - November One
November 17th Mythic Console - November One
December 1st Mythic PC - December One
December 8th Mythic Console - December One
Assuming this goes by the count of a mythic every third week for console that is pretty spot on.
All of this is pure conjecture on my part and is not a guaranteed mythic release schedule.
So by this schedule that would mean January 2018 Mythic troops and event troops should be 100 percent synced.
I imagine event troops will be in sync by September or so, if not sooner.