Questions reguarding D-Day

(requested by a friend)
Will there be a doomsday before the map resets?
Will commands be taken(vanilla)?
Will hack clients be used?
I feel like I should make this longer but...yeah.

There will most likely be one.
Hack clients will probably not be used, but plugins that emulate their functions will.

Much appreciated

As if you can be bothered to put in plugins just for one day...