OK, there's really only one right now, besides the one to Tokyo, which is inaccessible. But The Whispering Tide event is in full swing; I suspect there will be more. This time, the "War Effort" centers around farming Pure Metal and crafting "Ambrosia of Supernal Quicksilver" to fuel the the capacitors which are supposed to be preventing the spread of the Filth. I can't help wondering if the Beestung are being misled though, much like fighting the Guardians of Gaia seemed counter-intuitive.
Subscribers are getting "free" event currency tokens, apparently, that non-members do not receive. There's also a free 8-hour (played time) XP boost available in the claim items section of the "Secret Store."