City sieges lvl 40... 25 man warband...instanced from what I read.
But the stars have to align for this to happen...
Control of the Tiers ...i didn't read to far into it... since I am not in that participation group....stupid events are outside my play times.
anyway...this is off but the base of it is..
Control of tier zones..= unlock city to siege...
For example: area 1 2 3 in a tier.
area 1 has to be locked to move onto area 2 to battle...progressing to full locked zones..then to a final keep take... of there is a stalemate...a timer for lockdown resets
I'll have to read a lot more on the specifics..but I feel its something I can learn more of on Live.... end game is so far away .... unless they hand me lvl 40 and city sieges testing daily.... i will probably just leave that for Live game to experience...