If you have purchased a Legacy or Starter Pack, please see this thread for instructions on how to claim your items in-game. (Please see the yellow text in the linked thread for instructions on creating a Reman.) (Not seeing your pack in-game? Please see the lime-green text in the linked thread above for information.)
If you have additional questions about the Legacy or Starter pack, please read this FAQ.
Thanks SO MUCH for all your support, and we'll see you in-game!
Not sure where they got an hour from, but the launcher said the maintenance would last between 15 and 17 GMT (9-11am CST), so technically by the launcher, they still have 45 minutes or so, before the servers are brought back up assuming they finish on time, and don't need to extend it again.