I just check not a few seconds ago and you can pick up in store / reserve your Apple iPhone 5s available at North County Fair and Fashion Valley in the 32GB Space Gray for AT&T! The White 64GB AT&T is also available at NCF. Are you upgrading? update: all three Space Gray models in the 32GB variant are available from all three carriers AT&T, Sprint or Verizon. It is unknown why the unlocked / T-Mobile / contract-free version is listed as unavailable at the moment when using Apple's online reservation system. Still no Golds available in any form or fashion.
update 2 @ 12:22am 24 Sept: looks like Apple has just stopped the "Personal Pickup" option on their website for the iPhone 5s but the iPhone 5c option is still available.
update 3 @ 15:56 27 Sept via 9to5mac:
Apple will restore the Personal Pickup option for the iPhone 5s as soon as this upcoming Monday, September 30th.